| A | B |
| abnormal | |different from what is normal or usual, in a way which is strange or dangerous |
| category | a group of people or things of a similar type |
| complication | a new medical problem that develops when you are already ill |
| contact | to telephone someone or write to them |
| contract | to get a serious disease |
| cough | to make air come out of your throat with a short sound |
| cure | to make someone with an illness healthy again |
| emerge | to appear from somewhere or come out of somewhere |
| environmental | the environment the air, land, and water where people, animals, and plants live |
| factor | one of the things that has an effect on a particular situation, decision, event, etc |
| fever | when someone's body temperature rises because they are ill |
| focus (on) | to give a lot of attention to one particular subject or thing |
| major | more important or more serious than other things or people of a similar type |
| minor | not important or serious |
| obviously | in a way that is easy to understand or see |
| occur | to happen, often without being planned |
| organ | a part of an animal that has a special purpose |
| prompt | done or acting quickly and without waiting, or arriving at the correct time |
| relief | when something stops hurting you |
| seek | to try to find or get something |
| sore | painful, especially when touched |
| source | where something comes from |
| transmit | to pass something from one person or place to another |
| trigger | to make something begin to happen |