rinderpest and haemorrhagic A total of 15 calves, susceptible to septicaemia were divided into 4 groups. One, which received rinder
pest vaccine alone, another which received simultaneously both rinder pest and haemorrhagic septicaemia vaccines at separate sites, a third which received haemorrhagic septicaemia vaccine alone and a fourth which was held as a non vaccinated control group. The simultaneous vaccination of cattle with both vaccines produced no adverse effects and the animals remained clinically normal during a trial period of 42 days and for a further observation period of six months.
The serological response to vaccination as mentioned at day 0, 21 and 42 in virus neutralization and indirect haemagglutination tests was essentially the same in animals receiving simultaneous vaccination with both vaccines and in those receiving either vaccine alone.
For logistic and economic reasons, and in view of such positivity of results, the simultaneous vaccination of cattle with both vaccines is recommended to be followed through vaccination campaigns in Egypt.