CDC calling Delta Variant 'variant of concern'

The CDC has determined the delta variant is now a "variant of concern," a designation given to strains scientists believe are more transmissible or can cause more severe disease. In fact, the symptoms are very similar to a summer cold, which is going around. So how do we tell the difference? Dr. Donnie Aga with Kelsey-Seybold Clinic joins FOX 26 Houston to help explain.