Our body

3. Medicines that help fight bacterial infections, but are not effective against viruses.
4. Tiny particles that can cause infections and diseases, and can be spread from person to person.
5. To keep someone or something safe from harm or infection.
7. A condition that affects the body or mind, often caused by an infection or injury.
10. system: The body's defense system that helps fight off infections and diseases.
11. Having good physical and mental well-being, free from disease or illness.
12. Signs or feelings that indicate a person has a particular disease or illness.
13. An organism that provides a home for a parasite or pathogen, allowing it to live and multiply.

1. Tiny living organisms that can cause infections and diseases.
2. To break down food in the body, or to understand and process information.
4. A way to protect against a specific disease by introducing a small, harmless piece of the disease-causing agent to the body.
6. Conditions caused by bacteria, viruses, or other pathogens that enter the body.
8. Having an illness or disease, often feeling unwell or unable to do daily activities.
9. throat A painful or uncomfortable feeling in the throat, often caused by an infection.