INDIANAPOLIS The colder weather is coming, which usually means an uptick in viral infections, but officials said they've already been seeing pneumonia cases for months.We actually started to see the uptick over the summertime, said Dr. Samina Bhumbra, the Medical Director of Infection Prevention at Riley Childrens Health. Its a trend health officials have seen locally and nationwide.The Centers for Disease Control and Prevention said bacterial pneumonia cases are rising nationwide, particularly in children. In October, they reported a 1% to over 7% rise in 2 to 4-year-olds and from about 3% to over 7% in older children between 5 and 17-years-old.Last month in Indianapolis, IU Health Urgent Care locations reported a 200% increase in cases from September. This season, we've been seeing what we call walking pneumonia. It's caused by a bacteria known as mycoplasma pneumonia, Dr. Bhumbra explained.Experts said the infection usually starts with a cough, fever, or sore throat.It can lead to Walking Pneumonia which is typically less severe but can be easier to spread.We want to protect our families from all the germs in the wintertime, said Kevin Stark. Stark came with his wife and two toddlers to take advantage of the free flu shot clinic on Thursday put on by Riley Childrens Health at the Childrens Museum of Indianapolis.Its nice, especially a perfect location for it to be at the Childrens Museum where families all go to and everybody can get it done together at the same time, added Sarah Stark. Officials said staying up to date and annual vaccines like the flu shot can help prevent lung infections like pneumonia.Whenever you come down with the viral illness, especially like the flu or COVID, that just makes your body more susceptible to other infections, especially bacterial pneumonia, Dr. Bhumbra told WRTV. Its important as we head into the colder months and holiday gatherings.We have two little ones and we also have a family of elderly people. Especially with the holidays approaching, we want to make sure we best protect ourselves and best protect them, added Sarah. Riley Childrens Health said they haven't seen as many flu cases so far yet this season, which they have linked to the warmer weather.However, they have seen a rise in some respiratory viruses, including walking pneumonia cases. Experts recommend getting vaccines now so you can build up your immunity before the holidays.They also suggest washing your hands and of course, staying home if youre not feeling well.The Childrens Museum will be holding another free flu vaccine clinic with Riley Childrens Health on Dec 5 from 4 p.m. 8 p.m.Anyone six months or older can get the shot and theyre even providing high-dose vaccines to Hoosiers 65 and older.