Flu Season 2024 South Africa Dates. Although the timing of the influenza season varies from year to year, influenza virus circulation occurs mainly during the winter months of may to august, but. The currently circulating seasonal viruses are influenza a (h1n1), influenza a (h3n2) and influenza b viruses.

Trivalent flu vaccines are formulated to protect against three flu. Arm yourself against flu this winter.