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Various species Ehrlichia and Anaplasma infect dogs, ruminants and humans (Service
2008). Erlichia chaffensis causes human monocytic ehrlichiosis,
while Anaplasma phagocytophilum
and Ehrlichia ewingii
parasitize granulocytes causing human granulocytic ehrlichiosis (Service
2008). Hard ticks of genera Amblyomma
and Ixodes serve as
vectors. Rodents and deer are
believed to be the principal reservoir hosts. Transstadial transmission has been substantiated. The disease
occurs widely in Europe, Africa, Venezuela and the United States where
Service (2008) reports infections may be on the increase. = = = = = = = = = = = =
= = = = = = = = Key References: <medvet.ref.htm> <Hexapoda> Matheson, R. 1950.
Medical Entomology. Comstock
Publ. Co, Inc. 610 p. Service, M. 2008. Medical
Entomology For Students. Cambridge
Univ. Press. 289 p Legner, E.
F.
1995. Biological
control of Diptera of medical and veterinary importance. J. Vector Ecology 20(1): 59_120. Legner,
E. F. 2000. Biological control of aquatic
Diptera. p. 847_870. Contributions to a Manual of Palaearctic
Diptera, Vol. 1, Science Herald, Budapest. 978 p. |