Flu

The flu, also known as influenza, is a contagious respiratory illness that is caused by viruses.

The main culprits behind this seasonal affliction are influenza type A and B viruses.

These viruses undergo constant changes through a process called antigenic drift, allowing them to evade the immune system and cause repeated infections in individuals.

The flu is primarily transmitted through respiratory droplets when an infected person coughs or sneezes, making close contact with an infected individual a prime exposure risk. Additionally, touching surfaces contaminated with the virus and subsequently touching the mouth, nose, or eyes can also lead to infection.

Factors such as overcrowded environments, weakened immune systems, and lack of vaccination contribute to the likelihood of contracting the flu.

Understanding these causes is essential for developing effective prevention strategies and minimizing its impact on public health each year.