Volume 8, Number 5—May 2002
Genetic Variants of Ehrlichia phagocytophila1, Rhode Island and Connecticut
|Host or tick species||EP-ha||Variant 1a||Variant 2||Variant 3||Variant 4|
|Ixodes scapularis ticks||+||+||+||–||–|
aVariant 1 detected only in ticks in Rhode Island and Connecticut; positive deer samples were collected in Maryland and Wisconsin (13,14).
bBased on samples from 35 confirmed human infections from various states, including Rhode Island and Connecticut.
1Since this study was conducted, new nomenclature (Anaplasma phagocytophila) has been proposed; see Dumler JS, Barbet AF, Bekker CP, Dasch GA, Palmer GH, Ray SC, et al. Reorganization of genera in the families Rickettsiaceae and Anaplasmataceae in the order Rickettsiales: unification of some species of Ehrlichia with Anaplasma, Cowdria with Ehrlichia, and Ehrlichia with Neorickettsia, descriptions of six new species combinations and designation of Ehrlichia equi and ‘HGE agent’ as subjective synonyms of Ehrlichia pagocytophila. Int J Syst Evol Microbiol 2001;51:2145-65.