Journal of Clinical Microbiology, July 2000, p. 2784-2787, Vol. 38, No. 7
0095-1137/00/$04.00+0
Division of Viral and Rickettsial Diseases, National Center for Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia
Received 30 November 1999/Returned for modification 10 March 2000/Accepted 2 May 2000
Rotavirus strains from 964 fecal specimens collected from children at 11 U.S. hospital laboratories from November 1997 to March 1998 and from samples collected at 12 laboratories from November 1998 to March 1999 were typed for G and P proteins. Serotype G1 was the predominant serotype in 1997-1998 (88%), followed by G2 (6.2%), G9 (3.3%), and G3 (1.5%). This pattern was similar to that seen in 1998-1999: G1 (79%), G2 (15%), G9 (3.0%), G4 (1.6%), and G3 (0.3%). Novel P[9] strains were identified in both seasons, and analysis of a 364-nucleotide fragment from gene segment 4 of one of the strains demonstrated 97.3% nucleotide identity with the prototype P3[9],G3 strain, AU1, isolated in Japan. This is the first report of a human AU1-like strain in the United States. These results reinforce our initial findings that serotype G9 persists in the United States but has not become a predominant strain and that the common serotypes G1 to G4 account for almost 90% of strains in circulation. Other uncommon strains exist in the United States but may have been overlooked before because of their low prevalence and the use of inadequate diagnostic tools.
Participants in the National Rotavirus Strain Surveillance System
include Rebecca Nelson, Arkansas Children's Hospital, Little Rock;
Michelle Hartin, Children's Hospital of San Diego, San Diego, Calif.; Christine Robinson, Children's Hospital of Denver, Denver, Colo.; Yolanda Arcilla, Medical Center of Delaware, Newark; Gayle Bloom, Clarian Health Partners, Indianapolis, Ind.; David Abel, Children's Mercy Hospital of Kansas City, Kansas City, Mo.; Gary Leonardi, Nassau County Medical Center, East Meadow, N.Y.; Paul A. Yam, Children's Memorial Hospital of Omaha, Omaha, Nebr.; DeLores Aiazzi, Washoe Medical Center of Reno, Reno, Nev.; H. Fred Clark, Children's Hospital of Philadelphia, Philadelphia, Pa.; Pam
Zapalec, Driscoll Foundation Children's Hospital of Corpus Christi,
Corpus Christi, Tex.; Charles Ash, Egleston Children's Hospital,
Atlanta, Ga.; and Kathy Dugaw, Children's Hospital and Regional
Medical Center, Seattle, Wash.
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