Typhoid ... The oral vaccine and Vi antigen injectable vaccine generally cause fewer adverse reactions than the heatinactivated injectable vaccine. ... View More Wordcount: 884	technology ... In 1954 Jonas Salk introduced an injectable vaccine containing an inactivated virus to counter the epidemic of poliomyelitis. Subsequently ... View More Wordcount: 3253
technology ... In 1954 Jonas Salk introduced an injectable vaccine containing an inactivated virus to counter the epidemic of poliomyelitis. Subsequently ... View More Wordcount: 3435	View More Wordcount:

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