role of cattle in the maintenance of leptospira interrogans serotype hardjo infection in northern ireland.kidneys of cattle, mice and badgers were cultured for leptospires in an attempt to evaluate the relative importance of these species in the epidemiology of bovine leptospirosis caused by the hebdomadis serogroup. leptospires closely related to serotype hardjo were recovered from 57 (28.5 per cent) of 200 cattle examined but no evidence of infection was found in either badgers or mice, indicating that cattle act as the maintenance host for serotype hardjo. many cattle were seronegative carriers.19817303438
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