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(ăn'əplăzmō`sĭs), infectious blood disease in cattle, sheep, and goats, caused by a rickettsiarickettsia
, any of an order (Rickettsiales) of very small microorganisms, many disease-causing, that live in vertebrates and are transmitted by bloodsucking parasitic arthropods such as fleas, lice (see louse), and ticks.
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 of the genus Anaplasma. The organism parasitizes red blood cells, causing their destruction and producing emaciation, anemia, jaundice, and, occasionally, death. The disease is present in the warmer regions of the world and is most prevalent in the United States in the Gulf states, lower Plains, and California. Wild ruminants such as deer and antelope may be asymptomatic carriers. Transmission of the disease occurs mainly by the spread of infected blood through insect vectors, especially ticks and biting flies. It can also be transmitted in herds as they undergo any sort of large-scale procedure, such as dehorning.

The incubation period varies from three to four weeks. Infected animals first show a fever, which may rise to 107°F; (62°C;) in severe cases, and then jaundice and anemia set in. Pregnant cows will frequently abort. Treatment of anaplasmosis consists of antibiotic therapy and blood transfusions, administration of fluids, and rest. Protecting well animals through the routine use of insecticides or insect repellents (to control insects that carry the rickettsia) or by vaccination limits the incidence of the disease.

Human granulocytic anaplasmosis, which was called human granulocytic ehrlichiosis when it was first identified (the causative agent, A. phagocytophilum, was classified at the time in Ehrlichia, another rickettsia genus), continues to be generically considered an ehrlichiosisehrlichiosis
, any of several diseases caused by rickettsia of the genera Ehrlichia and Anaplasma. Ehrlichiosis is transmitted by ticks. Both human forms tend to develop about nine days after a tick bite.
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a disease of domesticated and wild animals caused by blood parasites of the genus Anaplasma. The pathogen is transmitted from a sick animal to a healthy one by bites, chiefly of ixodoid ticks, as well as other insects (horseflies, stable flies, and mosquitoes). Anaplasmosis is found everywhere in the world, most often in the spring, summer, and autumn. The incubation (latent) period is from three to six weeks, more rarely three months. The clinical course of the disease involves a brief elevation of temperature by 1–1.5°C, jaundice and paleness of the mucous membranes, edemas, weakness, emaciation, and a reduction in milk productivity. Prevention includes combating the carriers, testing the animals for the presence of parasites, and bathing the animals in solutions of insecticides. For treatment, terramycin, biomycin, biovitin, and tetracycline are used.


Anaplazmozy zhivotnykh. Edited by A. A. Markov. Moscow, 1965.
References in periodicals archive ?
Also aligning with expanding tick population observations are Division of Public Health anaplasmosis and Lyme disease surveillance data that demonstrate parallel increases in reported incidence in northwestern and central Wisconsin and disease spread toward the southeast and northeast.
West Coast: Dogs may acquire Lyme disease and anaplasmosis from black-legged ticks (Ixodes pacificus).
There is no data to support antimicrobial prophylaxis to prevent Rocky Mountain Spotted Fever, ehrlichiosis, and anaplasmosis.
6) The incidence rate for anaplasmosis increased from 1.
However calf succumbed to other type of bacterial infection due to severe immunosupression as a result of anaplasmosis and died as informed by owner.
It occurs as frequently as Anaplasmosis, with which it has been confused.
Regarding human granulocytic anaplasmosis, diagnosis rely upon relevant clinical signs and laboratory analysis as follows; (i) microscobic morulae observation among neutrophils on satined blood smears along with antibody titer positivity against A.
La trombocitopenia ciclica infecciosa canina o anaplasmosis trombocitica es una enfermedad de tipo infecciosa causada por Anaplasma platys, descrita por primera vez a fines de la decada del 70 por Harvey et al.
Anaplasmosis is considered as one of the top 10 economically important rickettsial diseases affecting ruminants in India (44) and is principally transmitted by R.
Anaplasmosis is deadly infectious malady of small ruminants throughout the world.
Short title: Anaplasmosis in bovine in the Ecuadorian coast