The influenza virus, a common cause of seasonal illness, has affected humans for centuries. While early outbreaks may have occurred thousands of years ago, the first well-documented pandemic was in 1510, starting in East Asia and spreading to North Africa and Europe. Since then, seasonal influenza has become a recurring health concern.
The deadliest outbreak happened during World War I. Known as the “Spanish flu,” the 1918-1920 pandemic infected a third of the world’s population and caused an estimated 50 million deaths. The virus, first found in pigs, initially infected birds and cattle before mutating to spread among humans, demonstrating its ability to evolve rapidly.
There are four types of influenza viruses: A, B, C, and D. Types A and B are responsible for most seasonal flu cases. Symptoms include fever, fatigue, cough, and sore throat. Influenza A affects both humans and animals and spreads through droplets and contaminated surfaces. Influenza B infects only humans, particularly children. Experts recommend frequent handwashing and good ventilation to prevent infection.
Surim For The Junior Times junior/1751271458/1678407625
1. When was the first big flu pandemic?
2. What was the deadliest flu outbreak?
3. How many people died in the 1918 flu?
4. What are common flu symptoms?
1. Do you get a flu shot every year?
2. What do you do when you feel sick?
3. Why is it important to wash hands?
4. How do you take care of your health?
The influenza virus, a common cause of seasonal illness, has affected humans for centuries. While early outbreaks may have occurred thousands of years ago, the first well-documented pandemic was in 1510, starting in East Asia and spreading to North Africa and Europe. Since then, seasonal influenza has become a recurring health concern.
