MISSISSIPPI STATE -- Keeping healthy over the holidays is all about the germs.

David Buys, health specialist with the Mississippi State University Extension Service, said frequent, proper hand-washing and a flu shot are the best prevention tools.

“Flu and respiratory illnesses are the most common sicknesses in the winter, and they are both transmitted by mucus,” he said. “Viruses and bacteria are transmitted when somebody coughs or sneezes on their hand, and you touch their hand or an object they have touched, such as a doorknob, and then touch your mouth or nose.”