B19 virus

n. parvovirus that infects humans and is related to arthritis and arthralgia

Parvovirus B19 (B19 virus) was the first (and, until 2005, only) human parvovirus to be discovered, by chance in 1975 by the Australian virologist Yvonne Cossart. It gained its name because it was discovered in well B19 of a large series of petri dishes apparently numbered in this way. Parvovirus B19 is best known for causing a childhood exanthem called fifth disease or erythema infectiosum.
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