Live in ovo vaccine
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United States of America Patent
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May 15, 2001
Grant Date -
N/A
app pub date -
May 6, 1996
filing date -
Nov 3, 1993
priority date (Note) -
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Abstract
The present invention relates generally to modified microorganisms suitable for use as live in ovo vaccines for avian species. The live in ovo vaccines of the present invention are useful for inducing immunity before or immediately after hatching against a virulent form of the modified microorganism or a microorganism immunologically related to the modified microorganism or a virulent organism or virus carrying an antigenic determinant expressed by the modified microorganism in the live vaccine. The subject live in ovo vaccines are particularly efficacious in enhancing the survival rate of newly-hatched poultry birds.
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