Safety, infectivity, immunogenicity, and in vivo stability of two attenuated auxotrophic mutant strains of Salmonella typhi, 541Ty and 543Ty, as live oral vaccines in humans.
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M. F. Edwards | M. Levine | J. Morris | G. Losonsky | D. Herrington | B. Tall | G. Losonsky | S. Svenson | J. Murphy | James R. Murphy | A. Lindberg | S. Baqar | A. Lindberg