Combined Vaccines from Inactivated Enterobacteriaceae for Oral Application,
ROBERT KOCH-INSTITUT BERLIN (WEST GERMANY)
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Combined oral vaccines from inactivated Enterobacteriaceae yielded in animal experiments strikingly good protection to parenteral infection. The non-specific elements of such vaccines obviously are acting synergistically with the specific elements of the vaccine. The mechanism of this phenomenon has still remained unelucidated.