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Acknowledgments The authors thank Richard F. Jacobs for the previous contributions to this chapter. The genus Bartonella consists of more than 40 species, of which the best known is B. henselae. The role of B. henselae in most cases of…
Historical Background The initial two serotypes of the genus Parechovirus were isolated in 1956 from children with diarrhea. On the basis of the scheme used at that time for the classification of the enteroviruses, they were classified as echovirus (E)…