Abstract
A new typhoid vaccine has just been licensed, which is the third typhoid vaccine available in the United States.1,2 Since publication of the 1994 Red Book occurred before licensure, this new vaccine is not included. The recommendations concerning the two previously licensed typhoid vaccines in the 1994 Red Book remain unchanged.3
The new vaccine, Typhoid Vi, is manufactured by Pasteur Mérieux (Marnes-La-Coquette, France). This parenteral vaccine is composed of the purified Vi (virulence) antigen, which is the capsular polysaccharide (ViCPS) of Salmonella typhi. The two previously licensed typhoid vaccines are an oral live-attenuated vaccine, the Ty21a vaccine, manufactured by the Swiss Serum and Vaccine Institute, and the parenteral heat-phenol-inactivated vaccine (Berne, Switzerland), manufactured by Wyeth-Ayerst, which has been available for many years.
- Received February 6, 1995.
- Accepted March 13, 1995.
- Copyright © 1995 by the American Academy of Pediatrics
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