ANTIBODY-LEVELS TO FOOT-AND-MOUTH-DISEASE VACCINE O-TYPE IN VACCINATED EWES

Foot and Mouth Disease (FMD) (Loeffler and Fresch, 1897), casued by a picornavirus is one of the economically importont viral diseases in mo st of the developing countries like India. Owing to the antigenic pleu rality, complete eradication is a problem in many countries. Four majo r types have been reported in this continent, viz, O, A, C and Asia-1, among cattle and sheep (Sharma, 1979; Singh and Sharma, 1980), In the present study, the levels of antibody against FMDV 'O' type in the se ra of ewes vaccinated with polyvalent Foot and Mouth Disease vaccine, at different time points after lambing are reported.