A positive role, in decreasing the loess of animal*é-life as 
& result of foot and mouth infection, was played by using 
(specially in case of the younger stock) hyperimmunizing serum 
and blood serum of animals which have had foot and mouth disease, 
as prophylactic and medicinal measures, 
in order to understand the foot and mouth epizootic, we must 
record some peculiarites in the development and the course of 
the foot and mouth epizootic, caused by the A 2 virus in the 
2 
Ukrainian SSR, 
In our country, the foot and mouth disease, caused by the 
A,.,. tirus, was first observed in 1955. 
22 
In our efforts to analyse the source and means of bringing 
in the foot and mouth infection and its propagation at the 
conmencment of the feot and mouth disease, we have also studied 
the various weteprological conditons and its influence on the 
disease. 
The dynamical development of the foot and mouth epizootic, 
caused by A virus, shows that this disease was propagated in 
22 
ukrain in Autumn and Winter. ThHé sixty three percent of all areas, 
affected by the foot and mouth disease, was from the month of 
October to December, 1965. During this period, the number of 
large cattle affected by the foot and mouth disease was 61%, 
the number of pigs was 50%, and the overall number of goats and 
