This site is currently implementing core features and is not ready for patient use yet.
This site is currently implementing core features and is not ready for patient use yet.
For informational purposes only — not medical advice
Get a free vaccination guide and nearby clinic recommendations — straight to your inbox.
How serious?
Risk of death
Yes
Vaccine available?
Time to symptoms
Countries affected
Active outbreaks
Ensure childhood Hib vaccination is complete before travel. Risk increases in countries without routine Hib vaccination programs. Not a specific travel vaccine — part of routine childhood schedule.
Severe invasive bacterial infections in young children including meningitis, epiglottitis, and pneumonia, preventable by Hib conjugate vaccine.
Hib disease refers to serious invasive bacterial infections caused by Haemophilus influenzae type b, primarily affecting young children under 5 years. It is effectively preventable with the Hib conjugate vaccine, which is part of routine childhood immunization schedules.
Before the introduction of vaccination, Hib was the leading cause of bacterial meningitis in children under 5 years of age. The bacterium spreads via respiratory droplets from person to person.\n\nInvasive Hib disease includes meningitis, epiglottitis (life-threatening airway swelling), pneumonia, septic arthritis, and cellulitis. Routine childhood vaccination has reduced the incidence of invasive Hib disease by over 99% in countries with high vaccine coverage.
Most common signs and symptoms
Symptoms depend on the site of infection.\n\nMeningitis: Fever, headache, stiff neck, sensitivity to light, altered consciousness. In infants: bulging fontanelle, irritability, poor feeding.\n\nEpiglottitis: Sudden high fever, severe sore throat, drooling, difficulty swallowing, noisy breathing (stridor), sitting in a forward-leaning position.\n\nPneumonia: Fever, cough, rapid or difficult breathing.\n\nSeptic arthritis: Joint pain, swelling, limited movement, fever.
Knowing the symptoms is the first step to a quick response.
Rapid onset with an incubation period of 2–4 days. Meningitis progresses over hours to days. Epiglottitis can obstruct the airway within hours and is a medical emergency. Recovery typically takes 1–2 weeks with appropriate treatment, though meningitis recovery may be prolonged with potential for long-term complications.
How this disease is identified
Diagnosis is based on clinical presentation and confirmed by blood cultures and cerebrospinal fluid analysis (for meningitis). Rapid detection tests and molecular testing (PCR) are available. Imaging may include chest X-ray for pneumonia or lateral neck X-ray if epiglottitis is suspected. Do not examine the throat directly in suspected epiglottitis — this can trigger complete airway obstruction.
Available treatment methods
Invasive Hib disease requires hospital treatment with intravenous antibiotics (typically third-generation cephalosporins). For meningitis, anti-inflammatory medication may be given alongside antibiotics to reduce the risk of hearing loss. Epiglottitis requires urgent airway management. Supportive care includes fluids, monitoring, and management of complications. Always seek emergency medical care for suspected invasive Hib disease.
Most cases are effectively treated with early diagnosis.
How to protect yourself
Preparation is the best protection.
Statistics and geographic data
Historically a global threat to young children, invasive Hib disease is now rare in countries with routine Hib vaccination. It remains a significant cause of childhood meningitis and pneumonia in low-income countries without high vaccine coverage. Peak incidence occurs between 6 and 18 months of age. An estimated 200,000 cases of serious Hib disease occur annually in unvaccinated populations worldwide.
Who is most at risk
Potential complications
Meningitis survivors may develop hearing loss (15–30%), intellectual disability, seizure disorders, or hydrocephalus. Epiglottitis can cause complete airway obstruction, which is rapidly fatal without intervention. Sepsis can lead to shock and multiorgan failure. Septic arthritis may result in joint damage. Long-term neurological sequelae are the most significant concern in meningitis survivors.
Expected outcomes and recovery
Hib meningitis has a 3–6% fatality rate with treatment and causes neurological complications in 15–30% of survivors. Epiglottitis has less than 1% mortality with proper airway management. Overall invasive Hib disease carries approximately 5% case fatality. Prognosis is excellent when promptly diagnosed and treated with appropriate antibiotics.
This disease is vaccine-preventable. Effective protection is available through vaccination.
Talk to a travel health specialist about the recommended schedule before your trip.
Find a vaccination clinic →The content on this page is for informational and educational purposes only. It does not constitute medical advice, diagnosis, or treatment recommendations. If you have health concerns, consult a qualified healthcare professional. Medova is not a medical service provider.
Full terms of useKnow which vaccine you need? Great. Not sure? Just tell us your destination — we will figure it out and match you with a clinic. Free, no obligation.