Anaplasma species are intracellular bacteria that are within the family of Anaplasmataceae of the order Rickettsiales. The names of some species, however, remains unchanged, however the genera of Anaplasma now includes pathogenic and non-pathogenic bacteria that infect erythrocytes e. Anaplasma marginale is an i ntracellular erythroparasite of cattle that produces severe hemolytic anemia and is of major economic importance. Endemic areas in the U. The disease is transmitted by several species of ticks and is called tick-borne fever.
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Anaplasma species are intracellular bacteria that are within the family of Anaplasmataceae of the order Rickettsiales. The names of some species, however, remains unchanged, however the genera of Anaplasma now includes pathogenic and non-pathogenic bacteria that infect erythrocytes e.
Anaplasma marginale is an i ntracellular erythroparasite of cattle that produces severe hemolytic anemia and is of major economic importance. Endemic areas in the U. The disease is transmitted by several species of ticks and is called tick-borne fever.
After infection, there is an incubation period of several weeks followed by a period during which parasitemia increases rapidly and is quickly followed by precipitous drop in hematocrit.
The clinical syndrome is one of acute onset, severe anemia with icterus, fever, anorexia, dehydration and depression. Unlike Babesia species, hemoglobinuria does not occur as the hemolysis is extravascular in the spleen and bone marrow. With acute infection, cattle can die or suffer abortion. If they survive, several days after the onset of signs, the number of parasites is very low and anemia is regenerative macrocytic and hypochromic with reticulocytosis.
A concurrent immune-mediated hemolytic anemia with spherocytes may also be present and results in removal of non-parasitized red cells. Diagnosis of anaplasmosis is confirmed by finding the parasite — it is recognized as small, round dark purple inclusions located at the periphery of red cells.
There are usually more than per cell. The organism must be differentiated from Howell-Jolly bodies. Effective vaccines have mitigated the economic impact of the disease. Anaplasma ovis infects goats and sheep and is usually non-pathogenic unless the animals are splenectomized.
The former infects granulocytes neutrophils and eosinophils whereas the latter infects platelets. The organisms are transmitted by ticks, particularly Ixodes species, with rodents and deer serving as reservoir hosts in the northeastern United States, white-footed mice are the implicated main reservoir of not only Anaplasma but also Borrelia burgdorferi.
Tetracyclines are the treatment of choice for all Anaplasma infections. Anaplasma marginale. Anaplasma phagocytophilum. Anaplasma platys. Thank you Your feedback has been received.
This article presents two case reports of Anaplasma platys detection in two women from Venezuela. Both patients were exposed to Rhipicephalus sanguineus , the presumed tick vector, and experienced chronic, nonspecific clinical signs including headaches and muscle pains. Intra-platelet inclusion bodies resembling A. These cases provide further support for A.
Phylogenetic analysis was performed by using groESL gene amplification. We identified Anaplasma platys as 1 of the etiologic agents of canine ehrlichiosis. Ehrlichioses are recognized as important emerging tickborne diseases in humans and wild and domestic animals. The brown dog tick, Rhipicephalus sanguineus , is the main tick that infests dogs in Chile 1. This tick species is a vector of Ehrlichia canis and has been implicated, but not confirmed, as a vector of Anaplasma platys 2.
Metrics details. Four species within Anaplasma genus are emerging zoonotic pathogens, which are transmitted by ticks and generate veterinary and public health concerns. Here, we performed a molecular survey of Anaplasma in Ankang, Northwest China. Hard ticks were collected and identified using morphological and molecular methods. Human-pathogenic Anaplasma species were tested using nested polymerase chain reaction. The nearly complete rrs , gltA , and groEL genes sequences from revealed Anaplasma species were amplified and sequenced to determine their molecular characteristics and their phylogeny.
Metrics details. It is known that Anaplasma A. However, few reports are available from the Balkans. This case report describes a dog, which was imported from Croatia to Germany in May Diagnostic tests were performed to identify infections caused by Anaplasma spp. Haematological examination of a blood smear revealed basophilic inclusions in thrombocytes, which were confirmed as A.