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.
The most common clinical presentation was meningitis (reported in 37% of cases), followed by bacteraemia (34%) and pneumonia (27%). More than 90% of cases were hospitalized, and there were 4 deaths, resulting in a case fatality ratio of 5.6% during 2009 to 2012.