The Importance of the Flu Vaccine In 2021
The flu is a contagious disease that causes infection of the nose, throat or lungs. It is caused by a group of viruses called influenza viruses. The infection can be mild to severe and in rare cases, can be fatal. Flu, also known as influenza, is the most common yet the most contagious disease and occurs in seasonal epidemics. The time of the year in which a flu epidemic occurs is known as the flu season, and it is usually in the winters or the fall season. The flu is transmitted by airborne droplets, which are formed due to coughing, sneezing or talking of infected people, which can be easily inhaled by a healthy person. The flu can also become a pandemic, which usually occurs due to a new strain of the influenza virus which is much more evolved as compared to other influenza viruses. Since people are not vaccinated for the new strain of the virus, it has the potential to spread from one country to another in a matter of weeks. The only reason why seasonal flu epidemics don’t become...