Persistence of Ehrlichia phagocytophila infection in lambs in relation to clinical parameters and antibody responses
- S. Stuen, DVM, PhD1,
- E. Olsson Engvall, DVM, PhD2 and
- K. Artursson, DVM, PhD2
Abstract
Five lambs were infected experimentally with Ehrlichia phagocytophila and examined regularly during the next six months. The lambs all had recurrences of parasitaemia at various times but had a fever on only 21 per cent of these occasions. A reduced number of leucocytes was observed in all the lambs for at least eight weeks. All the lambs were still infected four months after inoculation with E phagocytophila. After six months, blood from four of the five lambs was infective when inoculated into susceptible lambs.
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