Infectious diseases, ranging from the flu to tuberculosis and COVID-19, remain one of the leading global health concerns. These illnesses, caused by bacteria, viruses, fungi, or parasites, often spread through air, water, food, or close human contact. While medical advances have improved treatment, prevention remains the most powerful defense. Protecting yourself requires a combination of hygiene, vaccination, and healthy living.
1. Practice Good Hand Hygiene
Washing your hands with soap and water for a minimum of 20 seconds is one of the best methods to prevent germs from spreading. If soap isn’t available, use an alcohol-based sanitizer (minimum 60% alcohol). Research shows that hand hygiene reduces respiratory illnesses by 21% ([CDC, 2023](https://www.cdc.gov/handwashing/index.html)).
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