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A cold begins when a virus attaches to the lining ... Bird flu, or avian influenza, is a viral infection spread from bird to bird. The most common kind is the H5N1 strain. While swine flu isn ...

More than 200 viruses may cause a cold, the most common being rhinoviruses. These viruses spread from person to person if an infected person coughs or sneezes near you. Viruses are too small to ...

Alisha Goodrum, M.D., board-certified internal medicine physician with PlushCare, agrees, and says that the signs your cold is almost over include: Understanding the progression of a common cold ...