Humidity may be the common denominator to help explain why flu viruses are most prevalent during the winter months in temperate climates like the United States and most prevalent during the rainy season in many tropical regions close to the equator, according to a study released Tuesday by Virginia Tech researchers.

The Food and Drug Administration on Wednesday announced the approval of Novartis' Flucelvax, the first seasonal influenza vaccine licensed in the United States produced using cultured animal cells, instead of fertilized chicken eggs.

Parents are 52% less likely to develop a cold when exposed to a common cold virus than nonparents, researchers at Carnegie Mellon University have found.

Forces of Nature on Wednesday introduced its brand called Control, featuring 14 USDA-certified organic and Food and Drug Administration-registered topical medicines that target seven hard-to-treat conditions, including acne, herpes cold sores (caused by the herpes simplex virus) and scars.

Chickenpox is the scourge of many a schoolchild and usually a convenient, if itchy and feverish, reason to stay home for several days, but it also has been fatal for many who catch it — until recently.

The Food and Drug Administration has approved a vaccine for shingles in older patients.

Drug makers Valeant Pharmaceuticals International and Kadmon Pharmaceuticals will collaborate to develop antiviral drugs for...