The number of people getting sick with influenza B has gone up for three weeks straight, now making up about a third of flu cases nationwide.

The United States is in the grip of an aggressive winter flu season, with the U.S. Centers for Disease Control and Prevention (CDC) having recently reported a surge in visits to doctors on a scale not ...

(NEXSTAR) – The flu is spreading far and wide across the U.S. – and influenza A is largely to blame. Of all the flu tests reported to the Centers for Disease Control and Prevention since the start of ...

Highly pathogenic avian influenza A(H5N1) viruses are circulating among wild birds and poultry in British Columbia, Canada. 1 These viruses are also recognized to cause illness in humans. Here, we ...

Highly pathogenic avian influenza, HPAI, or “bird flu,” cases are popping up, so here are some expert facts about the viral ...

Massachusetts is in the midst of a sharp flu surge, with cases and hospitalizations climbing faster than usual for this point in the season. State health officials say low vaccination rates and a ...

Onset, intensity, severity and duration of influenza seasons vary each year and are driven by factors such as temperature, rainfall, humidity, circulating virus types/subtypes, population immunity ...

By Hugo Francisco de Souza A rare human challenge-style trial shows that even with poor ventilation and prolonged exposure, ...