Ty21a typhoid vaccine

Known as: Ty21a 
A live attenuated bacteria oral vaccine used to prevent typhoid, which is caused by Salmonella typhi.
National Institutes of Health

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Highly Cited
2004
Highly Cited
2004
Our previous studies in volunteers immunized with Salmonella enterica serovar Typhi (S. Typhi) have suggested an important role… (More)
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Highly Cited
2002
Highly Cited
2002
Salmonella enterica serovar Typhi (S. typhi) strain Ty21a remains the only licensed attenuated typhoid vaccine. Despite years of… (More)
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Highly Cited
1999
Highly Cited
1999
Currently, two different formulations of Ty21a live oral typhoid vaccine are commercialized. The enteric-coated capsule… (More)
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Highly Cited
1998
Highly Cited
1998
OBJECTIVE To estimate the efficacy and toxicity of typhoid fever vaccines. DESIGN Meta-analysis of randomised efficacy trials… (More)
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Highly Cited
1996
Highly Cited
1996
The phoP/phoQ virulence regulatory genes of Salmonella typhi Ty2 were deleted, and the resultant strain (Ty800) was tested as a… (More)
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Review
1994
Review
1994
Typhoid fever remains an underestimated important health problem in many developing countries, causing more than 600,000 deaths… (More)
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Highly Cited
1991
Highly Cited
1991
When tested under conditions of moderate transmission of typhoid fever, a liquid formulation of the oral typhoid fever vaccine… (More)
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Highly Cited
1990
Highly Cited
1990
In a randomised, double-blind, controlled field trial in Santiago, Chile, 81,621 schoolchildren aged 5-19 years received three… (More)
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Highly Cited
1987
Highly Cited
1987
Three doses, given within one week, of Ty21a attenuated Salmonella typhi oral vaccine in an enteric-coated formulation provided… (More)
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1980
1980
A controlled field trial of a live oral typhoid vaccine was carried out in Alexandria, Egypt, in 1978-79. A total of 32 388… (More)
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