Germ prevention involves practices that reduce the spread of harmful microorganisms. Key methods include regular handwashing with soap and water, especially after using the restroom or before eating. Using hand sanitizers with at least 60% alcohol can also help when soap is unavailable. Another important aspect is maintaining cleanliness in shared spaces. Disinfecting frequently-touched surfaces, such as doorknobs and light switches, can minimize germ transmission. Additionally, staying up-to-date with vaccinations, like the flu vaccine, can protect against certain illnesses and contribute to overall public health.