Neobook — clinical reference

Overview

Definition and Pathophysiology

Clinical Presentation

Differential Diagnosis

References and Guidelines

Notes for HCPs

Clinical Highlights

Overview

Condition

Name: Acute Meningitis.
ICD-10 Codes:
- G00 = Bacterial meningitis, not elsewhere classified.
- G01 = Meningitis in bacterial diseases classified elsewhere.
- G02 = Meningitis in other infectious and parasitic diseases classified elsewhere.
- G03 = Meningitis due to other and unspecified causes.
- A39.0 = Meningococcal meningitis.
- A17.0 = Tuberculous meningitis.

Epidemiology

Prevalence

Global prevalence of acute bacterial meningitis (ABM) is 1.4–2.0 per 100,000 people annually, while viral meningitis affects approximately 14 per 100,000 annually.
In South Africa, meningitis is a leading cause of community-acquired and hospital-acquired neurological infections, with pneumococcal and meningococcal meningitis being most common.
Epidemic meningitis is most prevalent in the African "meningitis belt," affecting over 15 cases per 100,000 weekly during outbreaks.

Demographics

Infants, children, and young adults are most frequently affected by meningitis.
Neonates and individuals >60 years are at higher risk for infections by Group B Streptococcus and Listeria monocytogenes.

Sex Differences

Male patients have a slightly higher incidence of bacterial meningitis compared to females.
Pregnancy increases the risk for listeriosis-related meningitis.

Age of Onset

Neonates and children under five years are highly susceptible to bacterial meningitis.
Viral meningitis peaks in late adolescence and young adulthood.

Geographical and Socioeconomic Variations

The meningitis belt in sub-Saharan Africa experiences seasonal epidemics, predominantly caused by Neisseria meningitidis serogroup A.
Lower socioeconomic areas report higher rates of meningitis due to limited vaccination coverage and healthcare access.

Impact on Patient Outcomes

Acute bacterial meningitis has a case fatality rate of 20-30% despite appropriate treatment.
Neurological sequelae, including hearing loss, seizures, and cognitive impairment, occur in approximately 50% of survivors.
Viral meningitis typically resolves without sequelae, but herpes-related infections may cause significant morbidity.

Risk Factors

Host-related factors

Age: Neonates, infants, and the elderly are at highest risk.
Immunosuppression: Conditions such as HIV, cancer, diabetes, and asplenia increase susceptibility.
Pregnancy: Listeriosis-related meningitis is more common in pregnant women.
Chronic illnesses: Conditions like chronic otitis media, sinusitis, and diabetes mellitus.

Pathogen-specific factors

Nasopharyngeal colonisation with pathogens like Streptococcus pneumoniae, Haemophilus influenzae, or Neisseria meningitidis.
Resistance patterns among causative bacteria, complicating empirical therapy.

Lifestyle and environment

Living in close quarters such as dormitories, military barracks, and prisons increases transmission risk for meningococcal meningitis.
Seasonal peaks during dry seasons in regions like sub-Saharan Africa.

Medical interventions and procedures

Recent neurosurgical procedures or head trauma can lead to nosocomial meningitis.
Ventricular shunts and Ommaya reservoirs are associated with Staphylococcus aureus or coagulase-negative staphylococci infections.

Vaccination gaps

Incomplete or absent vaccination against Hib, pneumococcal disease, or meningococcal serogroups A, C, Y, W-135, and B.

Definition and Pathophysiology

Definition

Acute meningitis is an inflammation of the meninges, the protective membranes covering the brain and spinal cord, often involving the cerebrospinal fluid (CSF).
Bacterial meningitis is a severe, purulent infection of the subarachnoid space with a high risk of mortality and neurological sequelae if untreated.
Viral meningitis, a more common and generally less severe form, is caused by non-bacterial pathogens and typically resolves without long-term consequences.
Meningitis may be classified as community-acquired (e.g., Streptococcus pneumoniae, Neisseria meningitidis) or nosocomial (e.g., Gram-negative bacteria following neurosurgical procedures).

Pathophysiology

Infectious Process

Bacterial entry and colonisation: Pathogens such as S. pneumoniae and N. meningitidis colonise the nasopharyngeal mucosa and invade the bloodstream, often through epithelial cell disruptions or immune evasion via polysaccharide capsules.
Blood-brain barrier (BBB) penetration: Bacteria cross the BBB via endothelial transcytosis, inflammation-induced permeability, or direct invasion, reaching the CSF.
Rapid bacterial multiplication: Limited host defences in the CSF enable rapid bacterial replication, triggering an immune response.

Immune Response

Cytokine and chemokine release: Bacterial lysis releases cell wall components, such as lipopolysaccharides, stimulating pro-inflammatory mediators like tumour necrosis factor-alpha (TNF-α) and interleukins (e.g., IL-1β).
Leukocyte infiltration: Neutrophils migrate into the CSF, contributing to purulent exudate and increased intracranial pressure (ICP).
Blood-brain barrier damage: Inflammatory mediators increase BBB permeability, allowing serum proteins to leak into the subarachnoid space, exacerbating vasogenic oedema.

Neurological Impact

Increased intracranial pressure: Accumulation of CSF and inflammatory exudate obstructs normal CSF flow, leading to hydrocephalus.
Vascular complications: Vasculitis, thrombosis, and infarctions may result from vessel inflammation, causing strokes and further neuronal injury.
Direct neuronal damage: Reactive oxygen species, excitotoxic amino acids, and cytokine cascades cause neuronal apoptosis, particularly in the hippocampus and cerebral cortex.

Host Factors

Immune deficiencies: Conditions like asplenia, HIV, and complement deficiencies increase susceptibility to meningitis.
Age-related vulnerability: Neonates and the elderly have underdeveloped or waning immune responses, making them particularly prone to invasive infections.

Pathogen Variations

S. pneumoniae: Common in adults; associated with high mortality due to its ability to evade phagocytosis and complement pathways.
N. meningitidis: Frequently affects adolescents and young adults, with serogroups A, B, C, Y, and W-135 responsible for outbreaks.
Listeria monocytogenes: Affects neonates, pregnant women, and the immunocompromised; transmitted via contaminated food.
H. influenzae: Once a leading cause in children, now rare in vaccinated populations.

Non-infectious Mechanisms

In some cases, meningitis arises from autoimmune, neoplastic, or drug-induced inflammatory processes, mimicking infectious presentations.

Clinical Presentation

Symptoms

Acute Bacterial Meningitis

Fever:
- High-grade fever often accompanied by chills.
- An essential early symptom in most cases.
Headache:
- Severe, generalised headache.
- Described as persistent and throbbing.
Neck stiffness (nuchal rigidity):
- Painful resistance to passive neck flexion
- A hallmark symptom but may be absent in neonates and elderly patients.
Photophobia:
- Sensitivity to light, causing discomfort.
Nausea and vomiting:
- Common and may accompany increased intracranial pressure.
Altered mental status:
- Confusion, delirium, or reduced consciousness.
- Rapid onset in severe cases.
Seizures:
- Present in 20–30% of cases, often indicating increased ICP or cortical involvement.

Acute Viral Meningitis

Similar to bacterial meningitis but generally milder.
Symptoms include fever, headache, neck stiffness, photophobia, and malaise.
Nausea and vomiting are common but less severe.
Mental status changes are typically absent or mild.

Tuberculous Meningitis

Gradual onset of symptoms over days to weeks.
Persistent headache, low-grade fever, night sweats.
Confusion or lethargy may develop in advanced stages.
Focal neurological deficits and cranial nerve palsies may occur.

Signs

General Observations

Vital signs: Fever, tachycardia, and sometimes hypotension due to sepsis.
Appearance: Ill-looking, sometimes febrile rigours or pallor.

Neurological Examination

Positive meningeal signs

Kernig’s sign: Pain in the hamstrings upon knee extension with the hip flexed.
Brudzinski’s sign: Involuntary hip and knee flexion upon passive neck flexion.
Nuchal rigidity: Limited neck flexion due to pain.

Cranial nerve involvement

Diplopia, facial weakness, or hearing loss in some cases.
Focal neurological signs: Hemiparesis, ataxia, or aphasia in complicated cases.

Skin and Systemic Signs

Rash

Petechial or purpuric rash, especially in meningococcal meningitis.
May progress to ecchymoses or skin necrosis.

Signs of raised intracranial pressure

Papilloedema on fundoscopy.
Cushing’s triad (hypertension, bradycardia, irregular respiration) in severe cases.

Signs in neonates and infants

Non-specific signs: Poor feeding, lethargy, irritability, or bulging fontanelle.
Hypotonia or seizures may be the presenting features.

Diagnostic Criteria

Bacterial Meningitis

Triad of fever, headache, and neck stiffness present in the majority.
Altered mental status or seizures support diagnosis.
CSF findings: Elevated opening pressure, neutrophilic pleocytosis, low glucose, and high protein.

Viral Meningitis

Similar triad but milder presentation.
CSF findings: Lymphocytic pleocytosis, normal or slightly low glucose, normal or mildly elevated protein.

Tuberculous Meningitis

Gradual onset with prodromal symptoms.
CSF findings: Lymphocytic pleocytosis, very low glucose, high protein, and evidence of Mycobacterium tuberculosis on acid-fast stain or PCR.

Additional Considerations

Severe presentations:
- Rapidly progressive coma, signs of septic shock, or disseminated intravascular coagulation in meningococcal sepsis.
Differentiation from encephalitis:
- Encephalitis typically involves altered consciousness and focal deficits, distinguishing it from pure meningitis.

Differential Diagnosis

Conditions to Consider

Viral meningitis

Typically presents with fever, headache, and neck stiffness, similar to bacterial meningitis.
Often associated with milder symptoms and a favourable prognosis.

Encephalitis

Involves fever, altered mental status, and focal neurological deficits.
Commonly caused by herpes simplex virus and other arboviruses.

Tuberculous meningitis

Gradual onset of symptoms, including persistent headache, low-grade fever, and weight loss.
High prevalence in immunocompromised patients and endemic regions.

Fungal meningitis

Occurs in immunosuppressed individuals, such as those with HIV/AIDS.
Common causative agents include Cryptococcus neoformans and Candida species.

Subarachnoid haemorrhage

Sudden onset of severe headache ("thunderclap headache"), photophobia, and neck stiffness.
Frequently accompanied by altered consciousness or focal neurological signs.

Cerebral abscess

Symptoms overlap with meningitis but may include localised headache and focal neurological deficits.
Often associated with a history of sinusitis, otitis, or dental infections.

Migraine with aura

Severe headache with associated nausea, photophobia, and phonophobia.
Neck stiffness may occur, mimicking meningitis.

Cervical spine disorders

Neck stiffness and pain without systemic features like fever or altered mental status.
Conditions include cervical spondylosis and spinal epidural abscess.

Sepsis without meningitis

Fever, altered mental status, and systemic features of infection without significant neck stiffness.
May involve other organ dysfunctions, such as hypotension or acute kidney injury.

Key Differentiators

Viral meningitis

Mild symptoms compared to bacterial meningitis.
CSF: Lymphocytic pleocytosis, normal glucose, and mildly elevated protein.

Encephalitis

Altered consciousness and behavioural changes predominate.
MRI findings specific to certain viral aetiologies (e.g., temporal lobe involvement in HSV encephalitis).

Tuberculous meningitis

Subacute progression over weeks.
CSF: Elevated protein, very low glucose, and lymphocytic pleocytosis.

Fungal meningitis

Chronic symptoms in immunosuppressed patients.
CSF: Positive fungal culture or cryptococcal antigen test.

Subarachnoid haemorrhage

Sudden onset of symptoms with a "worst-ever" headache.
CT scan reveals blood in the subarachnoid space; lumbar puncture shows xanthochromia.

Cerebral abscess

Focal neurological deficits with a history of contiguous infection.
Brain imaging shows ring-enhancing lesions.

Migraine with aura

Symptoms are recurrent and episodic, often with a known history.
No fever or significant systemic signs.

Cervical spine disorders

Pain localised to the neck with preserved neurological function.
Imaging of the cervical spine reveals degenerative or infectious pathology.

Sepsis without meningitis

Systemic inflammatory response dominates.
Normal CSF findings if lumbar puncture is performed.

Diagnostic Tests

Initial Tests

Clinical Evaluation

Comprehensive history and physical examination

Document symptom onset, progression, and risk factors (e.g., recent infections, trauma, or immunosuppression).
Assess for systemic signs such as fever, rash, or altered consciousness.
Focus on meningeal signs such as neck stiffness, Kernig’s sign, and Brudzinski’s sign.

Basic Laboratory Tests

Full blood count (FBC)

Detects leucocytosis indicative of infection or immunosuppression.
Anaemia may indicate chronic disease or nutritional deficiencies.

Electrolytes, urea, and creatinine

Identify metabolic derangements contributing to altered mental status.
Evaluate for dehydration or acute kidney injury.

Blood glucose

Hypoglycaemia or hyperglycaemia may exacerbate neurological symptoms.

C-reactive protein (CRP) and erythrocyte sedimentation rate (ESR)

Markers of systemic inflammation and infection.

Coagulation profile

Essential before lumbar puncture (LP) to rule out bleeding risks.

Lumbar Puncture (LP)

CSF analysis

Opening pressure: Elevated in bacterial or tuberculous meningitis.
Cell count: Neutrophilic pleocytosis in bacterial meningitis; lymphocytic pleocytosis in viral or tuberculous meningitis.
Glucose and protein: Low glucose and high protein suggest bacterial or tuberculous meningitis.
Gram stain and culture: Identifies causative bacteria and guides antibiotic therapy.
PCR testing: Detects viral pathogens (e.g., HSV, enteroviruses) or bacterial DNA in partially treated cases.

Blood Cultures

Obtain before initiating antibiotics.
Helps identify bloodstream infections, particularly in bacterial meningitis.

Advanced Tests

Neuroimaging

Computed tomography (CT) scan

Performed prior to LP if there are focal neurological deficits, signs of raised intracranial pressure, or recent seizures.
Rules out contraindications for LP, such as mass effect or brain abscess.

Magnetic resonance imaging (MRI)

Preferred for detecting subtle structural abnormalities, including small abscesses or early vascular changes.

Specialised CSF Tests

Cryptococcal antigen test

Detects cryptococcal meningitis, especially in immunocompromised patients.

Acid-fast bacilli (AFB) stain and culture

Confirms tuberculous meningitis in cases with lymphocytic pleocytosis and low glucose.

Next-generation sequencing (NGS)

Identifies uncommon pathogens when standard tests are inconclusive.

Electroencephalogram (EEG)

Indicated if there are episodic seizures or suspicion of encephalitis.
Helps differentiate encephalitis from other causes of altered mental status.

Other Laboratory Tests

Procalcitonin

Elevated levels suggest bacterial aetiology.

HIV testing

Recommended in patients with high risk or immunosuppression.

Liver function tests

Detect hepatic encephalopathy contributing to altered mental status.

Ambulatory and Continuous Monitoring

Blood pressure (BP)

Monitor for signs of sepsis-induced hypotension or hypertension from raised intracranial pressure.

Electrocardiogram (ECG)

Identifies electrolyte abnormalities or sepsis-induced cardiac strain.

Clinical Pitfalls

Always perform neuroimaging before LP in patients with focal deficits or signs of raised ICP.
Delay in starting antibiotics should be avoided, even if diagnostic tests are incomplete.
Interpret CSF findings alongside clinical features and imaging for accurate diagnosis.

Management

First-line Therapy

Pharmacological Therapy

Empirical Therapy

Ceftriaxone

2 g IV every 12 hours.
Broad-spectrum coverage for Streptococcus pneumoniae, Neisseria meningitidis, and Haemophilus influenzae.
Recommended for its efficacy in reducing mortality and neurological complications in bacterial meningitis.

Vancomycin

15-20 mg/kg IV every 8-12 hours.
Added for coverage of resistant Gram-positive organisms, particularly penicillin-resistant S. pneumoniae.
Effective in reducing severe cases linked to antimicrobial resistance.

Ampicillin

2 g IV every 4 hours (if Listeria monocytogenes is suspected).
Covers Listeria monocytogenes, especially in neonates, older adults, and immunocompromised patients.
Critical in preventing high mortality associated with listeriosis-related meningitis.

Adjunctive Therapy

Dexamethasone

10 mg IV every 6 hours for 4 days (administered before or with the first antibiotic dose).
Reduces inflammation-mediated neurological damage.
Proven to decrease mortality and hearing loss in S. pneumoniae meningitis.

Supportive Measures

IV fluids:
- To maintain hydration and perfusion.
- Crystalloids (e.g., normal saline or Ringer’s lactate) are commonly used.
Analgesics and antipyretics:
- Paracetamol 1 g every 6 hours for fever and pain relief.
- Avoid non-steroidal anti-inflammatory drugs (NSAIDs) in cases of suspected renal impairment or coagulopathy.
Seizure management:
- Benzodiazepines (e.g., lorazepam) for acute seizures.
- Anticonvulsants (e.g., levetiracetam 500-1,000 mg twice daily) for recurrent seizures.

Non-Pharmacological Therapy

Ongoing Monitoring

Neurological status:
- Regular Glasgow Coma Scale (GCS) assessments.
- Monitor for signs of raised intracranial pressure, such as pupil asymmetry or bradycardia.
Vital signs:
- Monitor blood pressure, heart rate, respiratory rate, and temperature.
Fluid balance:
- Maintain strict input-output monitoring to prevent fluid overload or dehydration.

Infection Control

Isolation precautions:
- Droplet precautions for meningococcal meningitis until 24 hours after starting effective antibiotics.
- Educate caregivers and staff on hygiene practices to reduce transmission risk.

Second-line Therapy

Alternative Antibiotics

Meropenem:
- 2 g IV every 8 hours (for patients allergic to beta-lactams).
- Effective against multidrug-resistant organisms.
Chloramphenicol:
- 25 mg/kg IV every 6 hours (resource-limited settings).
- A viable option for meningitis epidemics in low-resource settings, particularly for meningococcal strains.

Antiviral Therapy

Aciclovir:
- 10 mg/kg IV every 8 hours (for suspected or confirmed herpes simplex virus meningitis).
- Effective in preventing complications associated with viral encephalitis overlap.

Referral

Indications for Specialist Referral

Neurology

For cases with seizures, focal neurological deficits, or suspected encephalitis.

Infectious disease

For complex or multidrug-resistant cases.

Critical care

For patients requiring mechanical ventilation or haemodynamic support.

Monitoring

Laboratory Monitoring

Repeat lumbar puncture:
- Indicated if no clinical improvement within 48-72 hours or for persistent fever.
Therapeutic drug monitoring (TDM):
- Regular serum levels for vancomycin and aminoglycosides to avoid toxicity.

Imaging Follow-up

MRI or CT scans:
- Repeat imaging for worsening neurological status or signs of abscess formation.

Long-term Management

Prevention

Vaccination:
- Conjugate vaccines for S. pneumoniae, N. meningitidis, and H. influenzae.
- MenACWY and MenB vaccines for meningococcal disease in high-risk groups.
Prophylaxis for contacts:
- Rifampin, ciprofloxacin, or ceftriaxone for close contacts of meningococcal meningitis cases.

Rehabilitation

Hearing and cognitive assessments:
- Audiological testing to detect hearing loss.
- Neurological evaluation to identify cognitive or motor deficits.

Follow-up

Routine follow-up:
- Monitor for late-onset complications, such as hydrocephalus or epilepsy.
- Schedule regular reviews for immunisation status and preventive education.

Medications

Drug Name

Empirical Antibiotics

Ceftriaxone.
Vancomycin.
Ampicillin.
Meropenem (alternative for penicillin-allergic patients).
Chloramphenicol (resource-limited settings).

Adjunctive Therapy

Dexamethasone.
Aciclovir (for viral meningitis).
Rifampin (prophylaxis for close contacts).

Posology (Dosage)

Empirical Antibiotics

Ceftriaxone:
- 2 g IV every 12 hours.
- Standard first-line treatment for bacterial meningitis.
- Effective against common pathogens, including S. pneumoniae and N. meningitidis.
Vancomycin:
- 15-20 mg/kg IV every 8-12 hours.
- Covers resistant Gram-positive organisms, particularly penicillin-resistant S. pneumoniae.
- Used in combination with ceftriaxone for synergistic effects.
Ampicillin:
- 2 g IV every 4 hours.
- Essential for covering Listeria monocytogenes in neonates, elderly, and immunocompromised patients.
Meropenem:
- 2 g IV every 8 hours.
- Broad-spectrum alternative for beta-lactam-allergic patients.
- Covers multidrug-resistant organisms.
Chloramphenicol:
- 25 mg/kg IV every 6 hours.
- Resource-limited alternative, particularly in meningococcal epidemics.

Adjunctive Therapy

Dexamethasone:
- 10 mg IV every 6 hours for 4 days.
- Administer before or with the first dose of antibiotics.
- Reduces inflammation and prevents neurological sequelae, especially in S. pneumoniae meningitis.
Aciclovir:
- 10 mg/kg IV every 8 hours
- Used for confirmed or suspected herpes simplex virus meningitis or encephalitis.
Rifampin:
- 600 mg orally twice daily for 2 days.
- Prophylaxis for close contacts of meningococcal meningitis cases.

Side Effects

Empirical Antibiotics

Ceftriaxone

Diarrhoea, hypersensitivity reactions, gallbladder sludge.

Vancomycin

Red man syndrome (infusion-related reaction), nephrotoxicity, ototoxicity.

Ampicillin

Rash, gastrointestinal upset, hypersensitivity reactions.

Meropenem

Nausea, diarrhoea, seizures (at high doses or in renal impairment).

Chloramphenicol

Bone marrow suppression, aplastic anaemia, grey baby syndrome (in neonates).

Adjunctive Therapy

Dexamethasone

Hyperglycaemia, gastrointestinal bleeding, immunosuppression.

Aciclovir

Nephrotoxicity (prevented by adequate hydration), nausea.

Rifampin

Orange discolouration of body fluids, hepatotoxicity, gastrointestinal discomfort.

Interactions

Empirical Antibiotics

Ceftriaxone

Avoid co-administration with calcium-containing solutions due to risk of precipitation.

Vancomycin

Increased nephrotoxicity when combined with aminoglycosides or NSAIDs.

Ampicillin

Reduced absorption with concomitant food or antacids.

Meropenem

Potentially reduced efficacy with valproate (lowers valproate levels).

Chloramphenicol

Potentiates effects of oral anticoagulants and hypoglycaemic agents.

Adjunctive Therapy

Dexamethasone

Enhanced hypokalaemic effect when combined with diuretics.

Aciclovir

Increased nephrotoxicity risk when combined with other nephrotoxic agents.

Rifampin

Potent inducer of cytochrome P450 enzymes, reducing efficacy of oral contraceptives and warfarin.

Complications

Acute Complications

Septic Shock

Common in meningococcal meningitis.
Results from overwhelming bacterial infection leading to multi-organ failure.
Requires immediate resuscitation with fluids, vasopressors, and antibiotics.

Raised Intracranial Pressure (ICP)

Causes brain herniation, a life-threatening condition.
Presents with Cushing's triad: bradycardia, hypertension, and irregular respiration.
Managed with head elevation, osmotic agents like mannitol, and close monitoring.

Seizures

Occur in 20–30% of bacterial meningitis cases, particularly with cortical involvement.
Acute management includes benzodiazepines, followed by antiepileptic drugs if recurrent.

Cerebrovascular Complications

Include vasculitis, ischaemic stroke, and intracranial haemorrhage.
Present with focal neurological deficits or altered mental status.
Managed with anticoagulation or antiplatelet therapy as appropriate.

Hearing Loss

Sensorineural hearing loss, particularly in pneumococcal meningitis.
Early use of dexamethasone can reduce the risk.

Hydrocephalus

Obstructive or communicating hydrocephalus caused by inflammation and adhesions.
Requires external ventricular drainage or shunt placement.

Chronic Complications

Neurological Sequelae

Cognitive impairment: Persistent memory, attention, and executive function deficits.
Rehabilitation and cognitive therapy may improve outcomes.
Motor deficits: Weakness or paralysis due to ischaemic damage or vasculitis.

Epilepsy

Post-infectious epilepsy: Develops in some patients with cortical involvement or scarring.
Long-term antiepileptic therapy may be required.

Chronic Pain Syndromes

Post-meningitis pain: Headaches or neuropathic pain, affecting quality of life.
Managed with analgesics, physiotherapy, and sometimes antidepressants or antiepileptics.

Endocrine Dysfunction

Hypothalamic-pituitary axis involvement: Leading to conditions such as diabetes insipidus.
Requires endocrine evaluation and hormone replacement therapy.

Psychiatric Disorders

Anxiety, depression, and post-traumatic stress disorder (PTSD) are common in survivors.
Early psychological intervention and counselling are beneficial.

Systemic Complications

Chronic kidney disease: Secondary to nephrotoxic medications or sepsis.
Cardiomyopathy: Secondary to septic shock or systemic inflammation.

Preventive Measures

Vaccination

Routine vaccination against Streptococcus pneumoniae, Neisseria meningitidis, and Haemophilus influenzae type B (Hib).

Prophylaxis for Contacts

Rifampin, ciprofloxacin, or ceftriaxone for close contacts of meningococcal meningitis patients.

Early Recognition and Treatment

Immediate administration of antibiotics and supportive care.
Use of corticosteroids to reduce inflammation and long-term complications.

Patient Education

Importance of vaccination and recognising early symptoms of meningitis.
Guidance on seeking urgent medical care for febrile illnesses with neurological signs.

Impact on Quality of Life

Daily Functioning

Neurological and psychological sequelae significantly impair quality of life.
Multidisciplinary rehabilitation is critical for functional recovery.

Healthcare Utilisation

Frequent follow-ups for hearing, cognitive, and motor assessments.
Emphasis on preventive care to reduce recurrent infections.

Economic Burden

High costs due to prolonged hospitalisations, rehabilitation, and loss of productivity.
Access to social and financial support systems aids long-term recovery.

Patient Education

Lifestyle Modifications

Healthy Diet

Maintain a balanced diet rich in fruits, vegetables, whole grains, and lean proteins.
Limit processed foods and added sugars, which can impact immune function and recovery.
Ensure adequate hydration, especially during febrile illnesses.

Physical Activity

Encourage light activities as tolerated during recovery.
Gradually increase physical activity to improve overall strength and well-being.

Sleep Hygiene

Establish a consistent sleep schedule to ensure adequate rest.
Create a calming sleep environment, avoiding stimulants like caffeine or electronics close to bedtime.

Personal Hygiene and Infection Prevention

Practise good personal hygiene, including frequent handwashing.
Avoid sharing utensils, drinks, or personal items to reduce the risk of spreading infections.

Preventive Measures

Vaccination

Adhere to vaccination schedules for Streptococcus pneumoniae, Haemophilus influenzae type B, and Neisseria meningitidis.
Ensure boosters are up to date for at-risk populations, including children, elderly adults, and immunocompromised individuals.

Awareness of Symptoms

Educate on recognising early signs of meningitis, such as fever, headache, and neck stiffness.
Emphasise the importance of seeking immediate medical attention for concerning symptoms.

Stress Management

Practise relaxation techniques, such as mindfulness, meditation, or deep breathing exercises.
Engage in enjoyable leisure activities to reduce stress and improve mental health.

Support Resources

Community and Online Support

Encourage participation in support groups for meningitis survivors or their families.
Online forums can provide additional emotional and practical support.

Educational Materials

Distribute reliable brochures and resources explaining meningitis, its management, and preventive strategies.
Recommend trusted websites or mobile apps for further learning.

Counselling and Mental Health Support

Offer referrals to counselling services for patients experiencing anxiety, depression, or post-traumatic stress disorder.
Highlight the availability of cognitive behavioural therapy (CBT) to support mental health recovery.

Medication Adherence

Importance of Adherence

Stress the importance of completing antibiotic courses even after symptoms improve.
Discuss potential side effects and how to manage them, ensuring patients understand the risks of stopping medication prematurely.

Medication Reminders

Suggest the use of pill organisers or digital reminders to maintain a consistent medication schedule.
Encourage keeping a diary to track dosages and side effects.

Symptom Tracking

Daily Symptom Logs

Patients should record symptoms, such as headaches, fever, or changes in mental status.
Tracking can help identify patterns and guide follow-up care.

Communication with Healthcare Providers

Report any worsening or new symptoms, such as seizures or behavioural changes, immediately.
Maintain regular follow-ups with the healthcare team to monitor recovery and adjust treatment plans.

Holistic Approaches

Complementary Therapies

Explore therapies like mindfulness or acupuncture, ensuring these are discussed with healthcare providers to avoid conflicts with medical treatment.
Focus on a balanced approach that incorporates conventional and supportive care.

Long-Term Management

Ongoing Care

Educate that full recovery from meningitis may take time and require ongoing care.
Set realistic expectations regarding possible complications and the need for long-term follow-up.

Active Role in Health

Empower patients to participate in their care by providing them with resources and tools.
Encourage active decision-making and discussions with their healthcare team about their treatment plans.

References and Guidelines

Key References

Johnson KA, Bainbridge ED. Meningococcal Meningitis; Tuberculous Meningitis. In: Papadakis MA, McPhee SJ, Rabow MW, editors. Current Medical Diagnosis & Treatment 2025. New York: McGraw-Hill; 2025. p. 245-253, 302-310.
Rusiecki J. Meningitis. In: Stern SD, Cifu AS, Altkorn D, editors. Symptom to Diagnosis: An Evidence-Based Guide. 4th ed. New York: McGraw-Hill; 2023. p. 347-355.
Papadakis MA, McPhee SJ. Meningitis, Meningococcal; Meningitis, Pneumococcal; Tuberculous Meningitis. In: Quick Medical Diagnosis & Treatment 2024. New York: McGraw-Hill; 2024. p. 88-95, 120-126.
Roos KL, Tyler KL. Acute Meningitis. In: Loscalzo J, Fauci AS, Kasper DL, Hauser SL, Longo DL, Jameson JL, editors. Harrison’s Principles of Internal Medicine. 21st ed. New York: McGraw-Hill; 2023. p. 1812-1820.
Levine A. Meningitis in Infants and Children. In: Tintinalli JE, editor. Tintinalli's Emergency Medicine: A Comprehensive Study Guide. 9th ed. New York: McGraw-Hill; 2023. p. 788-795.
Roos KL, Brosch JR. Meningitis and Encephalitis. In: McKean SC, Ross JJ, Dressler DD, Brotman DJ, Ginsberg JS, editors. Principles and Practice of Hospital Medicine. 2nd ed. New York: McGraw-Hill; 2017. p. 1312-1322.
Kumar N, Law A, Choudhry NK. Meningitis. In: Teaching Rounds: A Visual Aid to Teaching Internal Medicine Pearls on the Wards. Philadelphia: Wolters Kluwer; 2015. p. 346-352.
Langston SM, Bales BD. Epidemic Meningitis. In: Knoop KJ, Stack LB, Storrow AB, Thurman RJ, editors. The Atlas of Emergency Medicine. 5th ed. New York: McGraw-Hill; 2024. p. 228-233.

Clinical Guidelines

National Institute for Health and Care Excellence (NICE).
- Comprehensive guidelines for recognising and managing bacterial meningitis in children.
- Emphasises the importance of timely diagnosis, empiric antibiotics, and public health measures.
World Health Organization (WHO).
- Global recommendations for the treatment of bacterial meningitis in resource-limited settings.
- Covers vaccination, empiric therapy, and adjunctive measures.
South African Department of Health (DOH).
- Provides evidence-based protocols for managing bacterial meningitis in South African healthcare facilities.
- Includes guidance on antibiotic regimens and preventive measures.
American Academy of Pediatrics (AAP).
- Guidelines focused on the paediatric population, detailing antibiotic choices and supportive care.

Notes for HCPs

Clinical Pearls and Pitfalls

Prompt Diagnosis and Treatment Initiation

Initiate empirical antibiotic therapy immediately if bacterial meningitis is suspected—do not delay treatment for diagnostic tests.
Prioritise lumbar puncture but perform neuroimaging first if there are signs of raised intracranial pressure or focal neurological deficits.

Tailored Empirical Therapy

Choose antibiotics based on age, immune status, and suspected pathogens.
Ensure coverage for Listeria monocytogenes in neonates, elderly patients, and immunocompromised individuals with the addition of ampicillin.

Adjunctive Therapy Timing

Administer dexamethasone before or concurrently with the first dose of antibiotics to reduce inflammation-related complications, particularly in pneumococcal meningitis.

Monitor for Complications

Be vigilant for signs of raised intracranial pressure, seizures, or stroke.
Early recognition of complications, such as hydrocephalus or vasculitis, is critical to prevent long-term sequelae.

Assess Comorbid Conditions

Screen for and address conditions that may predispose patients to meningitis, such as otitis media, sinusitis, or immunosuppression.
Consider underlying systemic infections or adjacent foci, such as mastoiditis, when evaluating patients.

Infection Control and Prevention

Implement droplet precautions for meningococcal meningitis until 24 hours after initiating effective antibiotics.
Educate families about vaccination schedules and the importance of prophylactic antibiotics for close contacts.

Patient and Family Education

Emphasise adherence to the full course of antibiotics even after symptom resolution.
Provide guidance on recognising early signs of complications, such as persistent headache or behavioural changes.

Monitor Drug Interactions and Toxicity

Regularly monitor renal function in patients receiving nephrotoxic drugs such as vancomycin or aminoglycosides.
Check serum drug levels for agents like vancomycin to prevent toxicity.

Adjust Therapy Based on Culture Results

Narrow antibiotic coverage once culture and sensitivity results are available to reduce the risk of antibiotic resistance.
Transition to oral antibiotics where appropriate to complete the treatment course.

Holistic Patient Management

Address emotional and psychological needs, as meningitis survivors often face anxiety, depression, or post-traumatic stress disorder.
Include audiology and neuropsychological evaluations as part of follow-up care.

Customised Follow-up Plans

Schedule follow-ups for neurological assessments, including motor, cognitive, and sensory evaluations.
Monitor for late-onset complications such as epilepsy or chronic headaches.

Prevention Focus

Reinforce the importance of vaccinations against common pathogens like S. pneumoniae, N. meningitidis, and H. influenzae type B.
Provide prophylactic antibiotics to household contacts and others at risk during outbreaks.

Set Realistic Expectations

Educate patients and families about the potential for long-term sequelae, such as hearing loss or cognitive deficits.
Highlight the importance of rehabilitation and multidisciplinary support in improving functional outcomes.

Follow-up and Monitoring

Use validated tools to assess cognitive, auditory, and functional recovery during follow-ups.
Ensure ongoing support from a multidisciplinary team, including neurologists, audiologists, and mental health professionals.

Clinical Highlights

Recognise acute meningitis early through prompt identification of fever, headache, neck stiffness, and altered mental status.
Perform a lumbar puncture immediately unless contraindicated by signs of raised intracranial pressure or focal neurological deficits, in which case neuroimaging should precede the procedure.
Start empirical antibiotic therapy promptly—do not delay treatment while awaiting diagnostic results.
Include adjunctive dexamethasone in suspected bacterial meningitis to reduce inflammation-mediated complications, especially in pneumococcal cases.
Tailor antibiotic regimens based on patient factors such as age, comorbidities, and potential pathogens, ensuring coverage for organisms like Listeria monocytogenes in neonates, elderly, and immunocompromised patients.
Monitor for acute complications such as seizures, raised intracranial pressure, cerebrovascular events, and septic shock, intervening immediately as needed.
Be vigilant for chronic complications, including hearing loss, cognitive impairment, epilepsy, and psychiatric disorders, and refer patients for appropriate follow-up and rehabilitation.
Implement infection control measures, including droplet precautions for meningococcal cases and prophylactic antibiotics for close contacts to prevent disease spread.
Encourage adherence to vaccination schedules for S. pneumoniae, N. meningitidis, and H. influenzae type B to reduce the risk of future infections.
Emphasise the importance of completing prescribed antibiotic courses, even if symptoms improve, to prevent recurrence and resistance.
Educate patients and families on recognising early signs of relapse or complications, such as persistent headaches, seizures, or behavioural changes, and encourage timely medical follow-up.
Promote a multidisciplinary approach to recovery, involving audiologists, neurologists, mental health professionals, and physiotherapists to optimise patient outcomes.
Support patients emotionally and psychologically, addressing anxiety, depression, and post-traumatic stress disorder through counselling and cognitive behavioural therapy where needed.
Schedule regular follow-up appointments to monitor recovery, address late-onset sequelae, and reinforce preventive measures, ensuring a comprehensive and patient-centred care plan.

Field	Triage	Clinical Setting	Condition Type
Infectious Diseases	Emergency	ICU	Acute