Whooping cough cases are increasing in Wisconsin, and health officials are urging people to make sure their vaccinations are up to date.
Since the start of the year, state health officials have investigated nearly 3,500 cases. That's about 11 cases for every 100,000 people.
People who don't have school-aged children may not be thinking about immunizations, but doctors said they should be.
"Everybody sees it as I saw it before I had it as an adult -- that it's a childhood disease and it doesn't happen to adults," said Maxine Dwyer, a nurse at St. Mary's Hospital in Madison, who has had two bouts with whooping cough.
"This is the (cough) that sounds like it's coming from your toes. It's deep and it goes on and on and on to the point you feel like you may not be able to catch your next breath," Dwyer said.
According to the Wisconsin Department of Health Services, the highest instances are in Dane County.