Haemophilus influenzae is a species of bacteria that can cause many kinds of infections. These can range from mild ear infections to severe diseases, like bloodstream infections. Haemophilus influenzae bacteria most often cause pneumonia, a lung infection.
Symptoms include fever, cough, shortness of breath, Chills, Sweating, Chest pain that comes and goes with breathing, Headache, Muscle pain, Excessive tiredness, vomiting, pain in the belly. Antibiotics are used to treat Haemophilus influenzae infections. Most of the cases need to be hospitalized and monitored closely for treatment and management of complications such as meningitis and pneumonia.
In Hong Kong Special Administrative Region of China, where the estimated incidence of Hib meningitis and bacteremic pneumonia is only about 3.0 per 100,000 children aged under five years; there would still be about 10 cases per year, with perhaps one death and two children suffering sustained permanent neurological sequelae but surviving for decades, and thus in need of long-term health care.