THE BRONX - A doctor from St. Barnabas Hospital has some helpful tips on how to avoid catching the common cold this winter season.

Dr. Alida Rosado says the body’s defense against sickness seems to be diminished during the cold months of the year. She says the common cold is caused by a virus, not bacteria.

"The cold virus stays on the surface for a long time, so if you touch a doorknob and then you touch your mouth, your nose, your eyes - you get the virus," says Rosado.

Rosado recommends frequent hand washing or using an alcohol-based sanitizer to help eliminate the germs that cause colds. She also urges Bronx residents to get a flu shot.