Five cases were people age 65 years or older. ISDH says children under five, adults over 65 and people with chronic diseases like asthma or diabetes are at a higher risk.

The Marion County Public Health Department has reported the first flu-related death of the season.

This year's vaccine is changed to make it more effective and accessible.

Health officials caution children and people at risk limit contact with pigs at fairs. Humans cannot get the flu from eating pork, but putting anything in your mouth while in pig barns - food, drinks, tobacco products - can expose people to the virus.

The CDC says it's the first human case of the H3N2 flu in Indiana since 2013 and the first in the U.S. this year.

Viruses can remain infectious on different surfaces for days, and your hands become the vehicle.

The Marion County Health Department requested the temporary visitor restrictions in January when flu activity began to peak.

Liberty Christian School in Anderson says it's cancelling middle and high school classes Thursday and Friday because about half of teachers and one in five students are sick.

The Marion County Public Health department says increased flu activity is likely to last several more weeks.

"It is late, but it's not too late" to get your flu shot, one infectious disease expert says. "But run, do not walk, to get your influenza vaccine, and bring everyone in the family along with you."