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Infection and Immunity, May 2003, p. 2956-2959, Vol. 71, No. 5
0019-9567/03/$08.00+0 DOI: 10.1128/IAI.71.5.2956-2959.2003
Copyright © 2003, American Society for Microbiology. All Rights Reserved.
Pneumococcal Serotype 19F Conjugate Vaccine Induces Cross-Protective Immunity to Serotype 19A in a Murine Pneumococcal Pneumonia Model
Håvard Jakobsen,1 Viktor D. Sigurdsson,1 Sigurveig Sigurdardottir,1 Dominique Schulz,2 and Ingileif Jonsdottir1,3*
Department of Immunology, LandspitaliUniversity Hospital, and Medical Faculty, University of Iceland, Reykjavik, Iceland,1
Aventis Pasteur, Marcy l'Etoile, France2
Received 14 November 2002/
Returned for modification 19 December 2002/
Accepted 6 February 2003
Immunization with a pneumococcal conjugate vaccine (PNC) containing serotype 19F induces cross-reactive antibodies to 19A in mice and human infants. Active immunization with PNC and passive immunization with serum samples from infants vaccinated with PNC containing serotype 19F, but not serotype 19A, protected against lung infection caused by both serotypes in a murine model.
* Corresponding author. Mailing address: Department of Immunology, LandspitaliUniversity Hospital, Hringbraut, 101 Reykjavik, Iceland. Phone: 354-543 5812. Fax: 354-543 4828. E-mail:
ingileif{at}landspitali.is.
Editor: J. N. Weiser
Infection and Immunity, May 2003, p. 2956-2959, Vol. 71, No. 5
0019-9567/03/$08.00+0 DOI: 10.1128/IAI.71.5.2956-2959.2003
Copyright © 2003, American Society for Microbiology. All Rights Reserved.
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