The bacteria Bordetella pertussis causes whooping cough. It's spread when an infected person coughs or sneezes, spraying germ-laden droplets into...

Enteroviruses are small, icosahedral, single-stranded, positive-sense RNA viruses. Numbered enteroviruses cause a range of illnesses from mild ('hand, foot and...

Arboviruses are a group of diseases spread to humans through the bites of infected mosquitoes, ticks and sandflies. These viruses...

Picornaviruses are a family of nonenveloped RNA viruses that infect vertebrates. They contain a single-sense positive-sense RNA genome within a...

Neutropenia can be mild, acute or chronic and can come and go (cyclic). People with severe neutropenia are often hospitalized...