Recommendations for Influenza Vaccine Composition

Northern hemisphere November 1998-April 1999

It is recommended that vaccines to be used in the 1998-1999 season contain the following:

  • an A/Sydney/5/97(H3N2)-like virus;
  • an A/Beijing/262/95(H1N1)-like virus;
  • a B/Beijing/184/93-like virus. *

* The most widely used vaccine virus is B/Harbin/7/94.

(from Weekly Epidemiological Record, Vol. 73, 9, 1999)