Haemophilus influenzae

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Haemophilus influenzae is a major bacterial cause of childhood morbidity and mortality. It is a small Gram- negative bacillus that is non-motile and non-sporing.

In the past, and in unvaccinated populations, it is responsible for 60% of bacterial meningitis in children, of which 4 to 5% is fatal.

There are 11,000 cases per year in children younger than 5 years in the USA.

Last reviewed 06/2021

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