Is the flu vaccine necessary?

I. Need for influenza vaccine(i) Protection of vulnerable populations1. Older persons — Older persons have reduced physical functioning, low immunity and are vulnerable to serious complications such as pneumonia, respiratory…

Winter flu.

Winter Influenza: a healthy “spoiler” in winterIn winter, a “little demon” began to wander in the crowd, which was the winter flu, known as the Influenza. It's not like the…