All Posts Tagged With: "E. ewingii"

The increasing recognition of rickettsial pathogens – dogs and people

Full article: http://eutils.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&id=20207197&retmode=ref&cmd=prlinks

Excerpt:

Dogs and people are exposed to and susceptible to infection by
many of the same tick-borne bacterial pathogens in the order
Rickettsiales, including Anaplasma phagocytophilum, Ehrlichia
canis, E. chaffeensis, E. ewingii, Rickettsia rickettsii, R.
conorii, and other spotted fever group rickettsiae. Recent
findings include descriptions of novel Ehrlichia and Rickettsia
species, recognition of the occurrence and clinical significance
of co-infection, and increasing awareness of Rhipicephalus
sanguineus-associated diseases. Newer molecular assays are
available, although renewed efforts to encourage their use are
needed. This review highlights the ecology and epidemiology of
these diseases, and proposes avenues for future investigation.
Published by Elsevier Ltd.

Human granulocytic anaplasmosis affecting the myocardium.

Full article: http://ukpmc.ac.uk/articles/PMC1490240;jsessionid=7D7D2D45FB70B5A24793992EDD921DFB.jvm4

Excerpt:

Abstract

A case of 65-year-old male is reported who presented with myalgias, headache, and fever. He subsequently developed myocarditis and was diagnosed to have anaplasmosis on peripheral blood smear. He was treated with doxycycline for 30 days. A coronary angiogram done after recovery showed normal epicardial arteries. The case illustrates the importance of a careful examination of the peripheral smear, with a high index of clinical suspicion, which led to prompt treatment and complete recovery of the patient

Ehrlichiosis, first discovered before 1910, has been recognized to cause human infection since 1986.1 It belongs to Rickettsiaceae family. Ehrlichiae are small, obligate intracellular bacteria that grow in cytoplasmic vacuoles to form clusters called morulae. Three distinct species cause human ehrlichiosis. E. chaffeensis predominantly affects the monocytes and is hence termed human monocytic ehrlichiosis (HME) while E. phagocytophilium, and E. ewingii cause human granulocytic ehrlichiosis.2E. phagocytophiliumE. equi are now recognized as the same organism and has been renamed Anaplasma phagocytophilum; the disease is now known as Human Granulocytic Anaplasmosis (HGA). Both HME and HGA share similar clinical and laboratory features and are treated with the same antimicrobials.