Ty21a live oral typhoid vaccine and prevention of paratyphoid fever caused by Salmonella enterica Serovar Paratyphi B.

@article{Levine2007Ty21aLO,
  title={Ty21a live oral typhoid vaccine and prevention of paratyphoid fever caused by Salmonella enterica Serovar Paratyphi B.},
  author={Myron M. Levine and Catterine Ferreccio and Robert E. Black and Rosanna M Lagos and Oriana San Mart{\'i}n and William C Blackwelder},
  journal={Clinical infectious diseases : an official publication of the Infectious Diseases Society of America},
  year={2007},
  volume={45 Suppl 1},
  pages={S24-8}
}
In randomized, controlled field trials in Area Norte and Area Occidente of Santiago, Chile, 2 (Norte) or 3 (Occidente) doses of live oral typhoid vaccine Ty21a in enteric-coated capsules conferred protection against confirmed Salmonella enterica serovar Typhi disease (53% efficacy in Norte; 67% efficacy in Occidente) during 3 years of follow-up. There was also a trend in each trial showing protection against S. enterica serovar Paratyphi B disease (56% efficacy in Norte; 42% efficacy in… CONTINUE READING

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