Health Officials Warn of Spike in Flu Cases News | November 19, 2025 | 0 | by Morgan McCarthy Western Wisconsin residents and folks across the state could see an increase in influenza in the coming weeks. The Wisconsin Department of Health Services reports that about 23 percent of the Badger State population has received a flu shot for the season. Health officials say that statistic — combined with an increase in travel during the holidays — could add up to a rise in flu levels across the state.