**Recognised species are extending their endemic ranges due to the discovery of the small ''Babesia'' species, pet passport scheme and increased overseas travel
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**Large species comprises 3 subspecies
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==Identification==
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***''B. canis canis'' is the most important
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The adults are pyriform in shape, and around 5μm in length.
****Largely confined to southern Europe but is spreading
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==Life Cycle==
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***''B. canis'' uses [[Hard Ticks - Overseas|''Rhipicephalus'']] as a vector and is spreading northwards through Europe
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Sporozoites enter the host, when the tick feeds. These reproduce in the erythrocytes of the host. Merogony then occurs, and releases merozoites. Blood is ingested by the tick. When the larval tick moults into the nymphal stage, and enters the salivary glands. The life cycle then continues.
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***''B. gibsoni'' is now established in the USA and South-East Asia
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**British dogs have no immunity as no species are endemic to the UK so are highly susceptible if taken abroad
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''B. canis'' uses [[Hard Ticks - Overseas|''Rhipicephalus'']] as a vector and is spreading throughout Europe.
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**Prevention of [[Ticks|tick]] bites by use of an 'Amitraz' collar is currently the best method of protection