Clinical Case: 5-Year-Old with Fever, Petechiae and Neck Stiffness — Meningococcal Meningitis & Sepsis Workup for NEET PG

NEET PG pediatric meningococcal sepsis case: 5-yo with petechial rash, neck stiffness, LP timing, ceftriaxone + dexamethasone, Waterhouse-Friderichsen, contact prophylaxis.

The on-call pediatric ICU registrar is paged, the resuscitation room is activated, and IV access is secured immediately.

ABCD assessment and initial investigations

This child has severe sepsis with suspected meningococcal meningitis until proven otherwise. The mortality without prompt treatment is high; with optimal early treatment it falls to under 10 percent. The single biggest decision point is starting antibiotics within 1 hour — even before LP if LP is delayed for any reason.

A — Airway: Patent. GCS 12 — manage carefully. If GCS falls below 9 or there is loss of airway-protective reflexes, intubation and mechanical ventilation. High-flow oxygen via face mask now.

B — Breathing: RR 38 — appropriate compensatory tachypnea for sepsis and metabolic acidosis. SpO2 95 on face mask. Continuous monitoring; intubate if rising work of breathing or falling SpO2.

C — Circulation: Tachycardic, capillary refill 4 sec, cool peripheries, narrow pulse pressure, BP 80/45 (5th centile for age is ~75 systolic; he is on the edge of hypotensive shock). Two large-bore peripheral IV cannulas (22-24G); intraosseous access if peripheral fails within 90 seconds. Initial bolus 20 mL/kg balanced crystalloid (Plasmalyte/RL) over 5-10 minutes; reassess; repeat up to 40-60 mL/kg total over the first hour with frequent reassessment for fluid overload (hepatomegaly, rales, raised JVP, deteriorating SpO2). If still hypotensive after 40-60 mL/kg, start norepinephrine via central line (0.05-0.5 mcg/kg/min) as the first-line vasopressor in septic shock.

D — Disability: GCS 12, glucose 78 (low-normal — give glucose if <60). Pupils reactive. No focal deficit. No papilledema. Non-blanching petechial rash plus meningism plus altered sensorium = bacterial meningitis with sepsis until proven otherwise.

Empirical antibiotics — within 1 hour of triage (the single most important intervention):

• IV ceftriaxone 100 mg/kg (max 4 g) — covers N. meningitidis, S. pneumoniae, H. influenzae type b
• IV vancomycin 15 mg/kg (max 1 g) — covers penicillin/cephalosporin-resistant pneumococcus
• IV dexamethasone 0.15 mg/kg (max 10 mg) — given 15-20 minutes BEFORE or with the first antibiotic dose, then every 6 hours for 4 days. Mortality and hearing-loss benefit in pediatric H. influenzae and adult pneumococcal meningitis; reasonable to continue empirically until pathogen identification

In neonates and infants under 3 months, add ampicillin for Listeria and Group B Strep. In immunocompromised children, add acyclovir until HSV encephalitis is excluded.

Lumbar puncture — perform when stable:

LP is deferred until shock is resolving and coagulation is acceptable. Antibiotics are given first; LP can be done several hours later and CSF culture often remains positive (PCR is even more robust). LP is contraindicated or requires CT first if any of the following are present:

• Signs of raised ICP — papilledema, focal deficit, posturing, GCS <10, anisocoria
• Recent seizure (within 30 min)
• Immunocompromise
• Hemodynamic instability (defer until stabilised)
• Coagulopathy or platelets <50,000
• Skin infection at LP site

This child has GCS 12 with no focal deficit, no papilledema, hemodynamically improving after fluid bolus — LP is appropriate after stabilisation, no CT needed.

Initial investigations (first 30-60 minutes):

• CBC: WBC 24,500 (neutrophilia 88 percent), Hb 11.2 g/dL, platelets 78,000 (low — concerning for DIC)
• Coagulation: PT 19 sec (raised), aPTT 48 sec (raised), INR 1.8, fibrinogen 1.2 g/L (low), D-dimer markedly raised — overt DIC by ISTH score
• Renal: BUN 26, creatinine 0.8 (mildly raised for age)
• Electrolytes: Na 132, K 4.5, Cl 103, HCO3 14 (metabolic acidosis), anion gap 19
• Glucose: 78 (will check post-fluids)
• Lactate: 4.2 mmol/L (raised — tissue hypoperfusion)
• CRP: 240 mg/L (markedly raised)
• Procalcitonin: 28 ng/mL (very high — bacterial sepsis pattern)
• Blood cultures × 2 drawn before antibiotics if it does not delay them by more than 5 minutes
• Capillary blood gas: pH 7.28, pCO2 28, HCO3 13, BE -10 — partially compensated metabolic acidosis
• CXR: No focal consolidation, no effusion
• Urine dipstick: Negative for nitrites, mild proteinuria
• PCR for N. meningitidis, S. pneumoniae, H. influenzae on blood (and on CSF when available) — particularly useful when antibiotics have already been given
• CSF (after stabilisation, ~3 hours after admission): Opening pressure 28 cm H2O (raised), turbid appearance
  • WBC: 4,200/μL with 92 percent neutrophils
  • Protein: 280 mg/dL (markedly raised)
  • Glucose: 22 mg/dL (CSF:blood ratio 0.18 — low)
  • Gram stain: Gram-negative diplococci, intra- and extracellular — diagnostic of N. meningitidis
  • Culture and PCR pending

The diagnostic algorithm — confirming bacterial meningitis

NEET PG tests CSF analysis directly. Memorise this table cold.

CSF profile by etiology

CSF lactate >3.5 mmol/L, CSF:serum glucose ratio <0.4, and CSF procalcitonin support bacterial over viral when results are equivocal.

Etiology by age

For our 5-year-old: N. meningitidis, S. pneumoniae are the top two. The petechial/purpuric rash strongly favours meningococcus.

Diagnosis

Acute bacterial meningitis with septic shock and disseminated intravascular coagulation, secondary to Neisseria meningitidis (Gram-negative diplococci on CSF Gram stain), in a previously well 5-year-old without meningococcal vaccination — at risk for Waterhouse-Friderichsen syndrome and requiring pediatric ICU care, droplet isolation, and contact chemoprophylaxis with notification to public health authorities.

Differential diagnosis of fever with rash and meningism

The petechial/purpuric rash narrows the differential dramatically.

Petechial rash + fever + meningism

• Meningococcal sepsis / meningitis (commonest serious cause; non-blanching, rapidly spreading)
• Pneumococcal sepsis with DIC (less commonly with petechiae)
• Rocky Mountain spotted fever (centripetal rash starting on wrists and ankles, then trunk; geography-specific)
• Viral hemorrhagic fevers — dengue, leptospirosis, Crimean-Congo HF (geographically relevant in India)
• HSV encephalitis (vesicular not petechial; temporal lobe involvement)
• Acute infective endocarditis with septic emboli (Janeway lesions, Osler nodes)
• Henoch-Schonlein purpura (palpable purpura on buttocks/legs, joint pain, hematuria; rare to be septic-shock pattern)
• Idiopathic thrombocytopenic purpura with intercurrent illness (isolated thrombocytopenia, no DIC, no shock typically)
• TTP/HUS (microangiopathic hemolytic anemia, thrombocytopenia, renal failure)
• Acute leukemia presenting with sepsis (pancytopenia, blasts on smear)

Why our patient's rash is meningococcal

Five features lock it in: (1) rapidly spreading non-blanching petechial rash that has visibly progressed in hours, (2) classic meningism with fever and altered sensorium, (3) kindergarten contact (close-contact respiratory transmission), (4) CSF Gram-negative diplococci, and (5) DIC with overt coagulopathy and shock in a previously healthy child without vaccination. PCR and culture will confirm serogroup (most commonly A, B, C, W-135 globally; A and W-135 historically commonest in Indian outbreaks; B and Y more common in the West).

Management — antibiotics within 1 hour, ICU care, contact prophylaxis

Pediatric sepsis bundle

• Antibiotics within 1 hour of recognition
• Fluid resuscitation with 20 mL/kg crystalloid boluses, reassess, up to 60 mL/kg in the first hour (Surviving Sepsis Campaign Pediatric guidelines updated 2020 recommend conservative re-assessment after each bolus given resource-limited settings and TRACT trial concerns)
• Vasopressors if fluid-refractory — norepinephrine first-line for septic shock; epinephrine if cold shock with low CO; dopamine acceptable as second-line in resource-limited contexts
• Source control — meningitis is the source; antibiotic therapy is the source control
• Hydrocortisone if catecholamine-refractory shock or suspected adrenal insufficiency (Waterhouse-Friderichsen): 1-2 mg/kg q6h IV
• Glucose monitoring and replacement; avoid hyperglycemia
• Coagulopathy management — FFP and platelets if active bleeding or major procedure; avoid in stable DIC

Antibiotic course tailored once organism known

• Confirmed N. meningitidis (penicillin-sensitive): IV ceftriaxone 100 mg/kg/day OR IV penicillin G 250,000-400,000 U/kg/day in 4-6 divided doses, for 5-7 days
• Penicillin-resistant strains (rare): continue ceftriaxone
• Stop vancomycin once meningococcus confirmed (vancomycin is empirical cover for resistant pneumococcus)
• Stop dexamethasone at 4 days — no continued benefit

Droplet isolation and notification

• Droplet precautions until 24 hours of effective antibiotics completed (ceftriaxone clears nasopharyngeal carriage; penicillin alone does NOT, requiring an additional dose of rifampin/ciprofloxacin/ceftriaxone before discharge for the index patient)
• Notify the district health officer as a notifiable disease (under the Notifiable Diseases Act in most Indian states; meningococcal disease is on the IDSP list)
• Identify close contacts:
  • Household members
  • Day-care/school close contacts
  • Anyone exposed to oral secretions in the 7 days before symptom onset (sharing utensils, kissing, mouth-to-mouth resuscitation)
  • Healthcare workers exposed to airway secretions during intubation/resuscitation without PPE

Chemoprophylaxis for close contacts

Prophylaxis ideally within 24 hours of identifying the index case; benefit declines beyond 14 days. Vaccination of contacts in addition to chemoprophylaxis is recommended if the strain matches a vaccine serogroup (ACWY conjugate or MenB vaccines).

Pediatric ICU monitoring

• Continuous cardiorespiratory and SpO2 monitoring
• Hourly vitals, GCS, pupil exam for first 24-48 hours
• Strict fluid balance, urine output ≥1 mL/kg/hr target
• Repeat coagulation, lactate, electrolytes 6-hourly
• Repeat LP only if poor clinical response at 48-72 hours
• Audiology — auditory brainstem response (ABR) testing before discharge and at 4-6 weeks (sensorineural hearing loss is the commonest sequela, 5-30 percent)
• Neurodevelopmental follow-up at 6 weeks, 6 months, 1 year

Complications — early and late

Early (hours to days)

Waterhouse-Friderichsen syndrome (WFS)

• Fulminant meningococcemia + bilateral adrenal hemorrhage + acute primary adrenal insufficiency
• Rapidly spreading purpura, refractory hypotension, hyponatremia, hyperkalemia, hypoglycemia, DIC, multi-organ failure
• Treatment: IV hydrocortisone 50 mg/m² stat then 50-100 mg/m²/day infusion; aggressive fluid and vasopressor support; broad-spectrum antibiotics; FFP/platelets for active bleeding
• Mortality 40-50 percent even with optimal therapy

Disseminated intravascular coagulation (DIC)

• Petechiae, purpura, ecchymoses, mucosal bleeding
• Prolonged PT/aPTT, low fibrinogen, raised D-dimer, schistocytes on smear
• Treatment: address sepsis; FFP and platelets only for active bleeding or major procedure

Septic shock and multi-organ dysfunction

• AKI, acute respiratory distress syndrome, hepatic dysfunction
• Lactic acidosis as a marker of tissue hypoperfusion

Raised intracranial pressure and cerebral edema

• Worsening GCS, posturing, anisocoria
• Treatment: head-up 30 degrees, mannitol or 3 percent saline, seizure prophylaxis, ICU monitoring; surgical drainage if hydrocephalus

Seizures

• Occur in 20-30 percent of pediatric bacterial meningitis
• Manage acute seizure with IV lorazepam, then phenytoin/levetiracetam loading; treat underlying ICP, electrolyte derangement, fever

Limb ischemia from purpura fulminans

• Severe DIC and microvascular thrombosis can cause digital and limb ischemia requiring debridement or amputation
• Aggressive support; protein C concentrate has been used in some cases

Late (weeks to months)

• Sensorineural hearing loss (5-30 percent) — commonest sequela; ABR before discharge and at 4-6 weeks
• Hydrocephalus — communicating, may need VP shunt
• Cognitive and behavioural deficits (10-15 percent)
• Seizure disorder (5-10 percent)
• Cranial nerve palsies, hemiparesis, ataxia
• Subdural effusion / empyema — particularly with H. influenzae meningitis

Prevention — vaccines and cohort protection

Meningococcal vaccines available in India (2026)

Meningococcal vaccine is NOT in the National UIP as of 2026 — recommended via IAP for high-risk groups and travel medicine.

Other relevant pediatric vaccines

• Hib (in pentavalent) — H. influenzae type b coverage; in National UIP
• PCV13 — pneumococcal coverage; in UIP since 2021 in select states, now expanding nationally
• BCG, OPV, Hep B, DPT, MMR, Rotavirus, JE — standard UIP

Outbreak management

• Identify the strain via PCR and serogrouping
• Mass chemoprophylaxis is generally NOT recommended (resistance, side effects)
• Targeted vaccination of the affected community if vaccine-preventable serogroup
• Active surveillance for 4 weeks (one incubation cycle of N. meningitidis)
• Public health communication to educate on symptoms and seek-care advice

How NEET PG tests pediatric meningitis

Six recurring patterns. Recognise the pattern and the question collapses to a 30-second answer.

Pattern 1 — The CSF-interpretation question: Vignette gives CSF WBC 3,500 (90 percent neutrophils), protein 220, glucose 18, CSF:blood glucose ratio 0.2. Diagnosis? Acute bacterial meningitis. Trap: lymphocyte-predominant viral pattern (WBC 200, lymphocyte 80 percent, normal glucose, mildly raised protein).

Pattern 2 — The empirical-antibiotic question: Previously well 5-year-old with meningitis. Empirical regimen? IV ceftriaxone + vancomycin + dexamethasone. In a neonate (under 1 month)? Add ampicillin for Listeria/GBS coverage. Trap: answers offering "ceftriaxone alone" — risks missing resistant pneumococcus.

Pattern 3 — The dexamethasone-timing question: When is dexamethasone given in bacterial meningitis? 15-20 minutes BEFORE or with the first antibiotic dose, then every 6 hours for 4 days. Trap: "after antibiotics start" — proven mortality benefit only with pre-/concurrent dosing.

Pattern 4 — The LP-contraindication question: Child with suspected meningitis and GCS 8 with focal weakness. Next step? CT head before LP (and antibiotics first regardless). Trap: answers offering "LP first" — risk of herniation in raised ICP.

Pattern 5 — The Waterhouse-Friderichsen question: Child with meningococcemia, refractory hypotension despite fluids and norepinephrine, hyponatremia, hyperkalemia, hypoglycemia, and rapidly spreading purpura. Diagnosis? Waterhouse-Friderichsen syndrome. Treatment? IV hydrocortisone, ongoing antibiotics, vasopressors, ICU care.

Pattern 6 — The contact-prophylaxis question: 5-year-old diagnosed with meningococcal meningitis. Prophylaxis for household contacts? Rifampin 10 mg/kg q12h × 2 days, OR single-dose IM ceftriaxone, OR single-dose oral ciprofloxacin (adults). In a pregnant household contact? Single-dose IM ceftriaxone (rifampin contraindicated; ciprofloxacin avoided).

High-yield one-liners:

• Petechial rash + fever + meningism = meningococcal until proven otherwise
• Antibiotics within 1 hour — do NOT delay for LP
• Empirical regimen: ceftriaxone + vancomycin (+ ampicillin in neonates) + dexamethasone
• Dexamethasone 15-20 min BEFORE or with first antibiotic, then q6h × 4 days
• WFS = fulminant meningococcemia + adrenal hemorrhage + DIC; mortality 40-50 percent
• Contact prophylaxis: rifampin, ceftriaxone (preferred in pregnancy), or ciprofloxacin
• Sensorineural hearing loss is the commonest sequela — ABR before discharge and at 4-6 weeks
• N. meningitidis duration 5-7 days; pneumococcus 10-14 days; Listeria 21 days
• Notifiable disease in India — inform district health officer
• Droplet precautions for 24 hours after effective antibiotics

Frequently Asked Questions

When should antibiotics be given before lumbar puncture in suspected bacterial meningitis?

Antibiotics must be given empirically and must NOT be delayed by waiting for lumbar puncture. The principle is 'first dose, then tap' whenever there is any reason to delay LP: signs of raised intracranial pressure (papilledema, focal deficits, posturing, GCS under 9), seizures within the prior 30 minutes, immunocompromise, hemodynamic instability, coagulopathy, or skin infection at the LP site. CT head is required before LP only if focal neurological signs, new-onset seizure, immunocompromise, GCS under 10, or papilledema is present. Antibiotics within 1 hour of triage reduce mortality by 30-40 percent. CSF culture remains positive for several hours after the first antibiotic dose, so empirical treatment does not invalidate the diagnostic LP if performed promptly.

What is the empirical antibiotic regimen for bacterial meningitis in a 5-year-old in India?

Empirical therapy in a previously well 5-year-old in India is IV ceftriaxone 100 mg/kg/day in 1-2 divided doses (max 4 g/day) plus IV vancomycin 60 mg/kg/day in 4 divided doses (covers penicillin- and cephalosporin-resistant pneumococcus). Add IV dexamethasone 0.15 mg/kg every 6 hours for 4 days, given 15-20 minutes BEFORE or with the first antibiotic dose — proven mortality and hearing-loss benefit in pediatric H. influenzae and adult pneumococcal meningitis. In neonates and infants under 3 months add ampicillin (Listeria, Group B Strep coverage). Switch to focused therapy once culture and sensitivity return. Duration: meningococcus 5-7 days, pneumococcus 10-14 days, H. influenzae 7-10 days, listeria 21 days.

What is Waterhouse-Friderichsen syndrome?

Waterhouse-Friderichsen syndrome (WFS) is fulminant meningococcemia with bilateral adrenal hemorrhage producing acute primary adrenal insufficiency on top of overwhelming septic shock. Features: rapidly spreading purpura/ecchymoses, refractory hypotension despite fluids and vasopressors, hyponatremia with hyperkalemia and hypoglycemia (adrenal crisis), DIC with bleeding, multi-organ failure, and death within hours if untreated. Treatment requires IV hydrocortisone (50 mg/m² stat then 50-100 mg/m²/day infusion), aggressive fluid resuscitation, broad-spectrum antibiotics including ceftriaxone, vasopressor support (norepinephrine first-line), DIC management with FFP and platelets if bleeding, and pediatric ICU care. Mortality remains 40-50 percent even with optimal therapy.

What chemoprophylaxis is given to close contacts of a meningococcal case in India?

Close contacts (household members, day-care contacts, anyone exposed to oral secretions in the 7 days before symptom onset, healthcare workers exposed to airway secretions without PPE during intubation or resuscitation) must receive chemoprophylaxis ideally within 24 hours of identifying the index case. Three regimens are equally acceptable: oral rifampin 600 mg every 12 hours for 2 days in adults (10 mg/kg in children, 5 mg/kg in infants under 1 month — total 4 doses); single-dose IM ceftriaxone 250 mg in adults (125 mg in children under 15) — preferred in pregnancy; or single-dose oral ciprofloxacin 500 mg in adults (avoid in children under 18). Rifampin contraindicated in pregnancy and reduces efficacy of OCPs and warfarin. Vaccination of contacts in addition to prophylaxis if outbreak strain matches a vaccine serogroup.

Which meningococcal vaccines are available in India and where do they fit in the immunization schedule?

Meningococcal conjugate vaccines available in India cover serogroups A, C, W-135, and Y. Meningococcal A conjugate vaccine (MenAfriVac) is used in outbreak control in the meningitis belt of Africa but is not part of the routine UIP. Quadrivalent ACWY conjugate vaccines (Menactra, Menveo, MenQuadfi) are recommended by IAP for: high-risk children (functional/anatomic asplenia, complement deficiencies, HIV, terminal complement-component deficiencies), travelers to the African meningitis belt or for Hajj pilgrimage (mandatory for visa), laboratory workers handling N. meningitidis, household contacts of an index case during an outbreak, and during outbreaks of vaccine-preventable serogroups. MenB vaccines (Bexsero, Trumenba) cover serogroup B and are not yet routinely used in India. Routine UIP does not include meningococcal vaccine in 2026; high-risk recommendation is via IAP and travel-medicine guidelines.

Written by: NEETPGAI Editorial Team Reviewed by: Pending SME Review Last reviewed: April 2026