One proposal is to use killed-virus vaccine for the first two immunizations, then switch to live virus for the final two.
42.
The new policy is aimed at eliminating the handful of polio cases each year that are caused by the live virus vaccine.
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The first significant step towards preventing influenza was the development in 1944 of a killed-virus vaccine for influenza by Thomas Francis, Jr ..
44.
The U . S . Department of Agriculture has given a one-year license to a killed-virus vaccine being made by American Home Products.
45.
A live-virus vaccine can cause AIDS in newborns, the Dana-Farber Cancer Institute reported at a Washington conference on vaccine development earlier this month.
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It also urges accelerated research into a West Nile virus vaccine and a national web site to keep the public and media informed.
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The first study of a new West Nile virus vaccine for birds showed that an injected version prevented deaths, federal health officials said Thursday.
48.
Connaught Laboratories of Swiftwater won a $ 65 million contract from the Center for Disease Control and Prevention in Atlanta for polio virus vaccines.
49.
Connaught Laboratories Inc . of Swiftwater won a $ 3.4 million contract from the Defense Personnel Support Center in Philadelphia for influenza virus vaccines.
50.
Connaught Laboratories Inc . of Swiftwater won a $ 1.9 million contract from the Defense Personnel Support Center in Philadelphia for influenza virus vaccines.
