A pneumatically operated egg injection machine includes a sealed frame
structure with a pair of in line parallel tracks through an injection
section and a transfer section in series. An injection assembly includes
a plurality of injectors gripped in a support plate to simultaneously
inject vaccine into the same injection region irrespective of egg height
and orientation. Fluid delivery systems meter prescribed vaccine dosages
to the injecting needles with reduced turbulence, friction, heat and
residence time to increase the delivered titer to the injected eggs. A
transfer assembly lifts the injected eggs by causing a reduced pressure
around the injection hole while maintaining the injection hole at
atmospheric pressure. The injection assembly is sprayed with a sanitizing
solution at the same time that the injected eggs are moved from the
injection section to the transfer section.