A new version of the flu virus, called subclade K, is spreading.

The Louisville health department reports more than 700 flu cases since September.

Experts with UofL Health said fewer people were vaccinated this year, a contributing factor to a sharp peak in cases of the flu and other illnesses around Louisville.

Flu cases are on the rise in Louisville.

Other illnesses spiking in the Louisville area include RSV, COVID-19, and a stomach bug called Norovirus.

Doctors in the Louisville area are starting to see some flu and RSV cases as the holiday season approaches.