Haemophilus influenzae type b (Hib) vaccine

Haemophilus influenzae type b (HIB) is a bacterium that can cause severe invasive infections, especially in young children. Contrary to its name, Haemophilus influenzae type b does not cause influenza.

This infection is most common in children under 5 years old, with older children having a relatively lower risk of infection. Invasive infections most commonly present with symptoms of meningitis, and bacteremia often occurs simultaneously. This infection can also affect multiple parts of the body, such as the lungs, epiglottis (upper part of the throat), joints, and bones. Meningitis can cause fever, headache, stiff neck, and symptoms such as loss of appetite, nausea, vomiting, photophobia, mental confusion, and drowsiness. Patients with epiglottitis may experience symptoms such as fever, sore throat, drooling, painful swallowing, refusal to swallow, and even difficulty breathing.

HIB is transmitted through coughing, sneezing, or close face-to-face contact, and can also be transmitted through saliva or sputum when kissing or sharing items such as food, utensils, or drinks. Infants and children may also contract the disease if they share pacifiers, bottles, or toys with other children.

Sanofi

Four doses (at 2, 4, 6, and 18 months) can be administered starting from 2 months old.