DENVER -- The flu season is around the corner, but state health officials are already seeing influenza-related visits at hospitals.
Last year, the Colorado Department of Public Health & Environment officially started surveilling the virus on October 2. Health officials said 20 cases of the influenza virus have already been reported this year. That's double what it was this time last year.
Infectious disease control researchers in the Denver metro said they can predict what the flu season will look like here based on what's happening in the southern hemisphere.
"Australia, where most of the data has been validated, they saw two and a half more flu cases this year than they did last year," said CU professor Michelle Barron.