- Flu cases are on the rise in the United States.
- Last month, the WHO warned that this year’s flu vaccine may not be as effective at stopping the flu as experts had hoped.
- Flu season usually peaks in February.
About a month ago, the World Health Organization (WHO) announced that this year’s flu vaccine might not be as effective as we’d hoped. The four strains it was designed to target didn’t match the strains circulating in the Southern Hemisphere: influenza A (H3N2) and influenza B (Victoria).