1. MICROORGANISM
1.1. Germs
1.1.1. Bacteria
1.1.1.1. Very small
1.1.2. Virus
1.1.2.1. Smaller than bacteria
2. SPREAD THROUGH PHYSICAL CONTACT
2.1. Sharing personal belongings
2.2. Cold, red eyes and other skin disease
3. SPREAD THROUGH FOOD AND WATER
3.1. Can be found in contaminated food and drinks
3.1.1. It goes into our body and make us ill
3.2. Cause Food poisoning, diarrhea and cholera
4. PREVENTIONS
4.1. Keep your body clean
4.1.1. Take a shower in the morning and evening
4.1.2. Always wash your hands
4.1.3. Exercise regularly
4.1.4. Never use someone else's belongings
4.2. Eat clean and healthy diet
4.2.1. Eat healthy and balance diet
4.2.2. Eat fruits and vegetables
4.2.3. Food like meat and vegetables must be cook thoroughly
4.2.4. Check for the expiration dates
4.3. Keep your home clean
4.3.1. Bathroom, toilet, floor and tables must be clean using anti-bacterial products
4.3.2. Bathroom and toilet must be clean and dry
4.3.3. Garbage must be put inside a close plastic bag
4.4. Taking care of others
4.4.1. Avoid close contact when you're infected
4.4.2. Use face mask or close your nose and mouth when sneezing or coughing
4.5. Prevent diseases brought by mosquitoes
5. SPREAD THROUGH AIR
5.1. Cold, influenza, tuberculosis
5.1.1. Sneezing and coughing
5.1.1.1. People nearby are at risk of being infected