4. I could not figure out number 4
5. Bacteria- strep throat, Viruses- common cold
6. So your child can be protected against more diseases than ever before.
7.Endemic: a disease that exists permanently in a particular region or population. Malaria is a constant worry in parts of Africa . Epidemic: An outbreak of disease that attacks many peoples at about the same time and may spread through one or several communities. Pandemic: When an epidemic spreads throughout the world.
8. How do pandemics Occur. An influenza pandemic is a global outbreak of influenza and occurs when a new influenza virus emerges, spreads and causes disease worldwide. Genetic re assortment may occur when a host cell is simultaneously infected with two influenza A viruses.
I couldn't figure out number 4, but I hope the other answers are helpful. :))