Duration of immunity to East Coast fever (Theileria parva infection of cattle)

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Date
1971
Authors
Burridge M.J
Morzaria S.P
Cunningham M.P
Brown C.G.D
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Abstract
Forty-five cattle, which had recovered from ECF and been kept free from re-exposure to infection for periods of 1-43 months, were given a single uniform lethal challenge using a stabilate prepared from triturated infected ticks. AU withstood the challenge which killed the five controls. There was an increase in the incidence of mild febrile reactions with time since last exposure to T. parva, indicating a gradual loss of immunity in the absence of reinfection. The duration of the immunity was not related to the severity of the initial reaction.
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East African Agricultural And Forestry Journal, XXXVII (No. 4), p. 511-515
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