| A | B |
|---|
| Contagious | Spreadable by touch or through the air |
| Internal | Inside something rather than outside |
| Impact | an effect or result |
| Epidemic | the rapid spread of disease among many people |
| Resistance | the ability to fight off or overcome something |
| Feasible | Possible |
| Expose | to leave without protection |
| Infect | to give someone a disease |
| Estimate | to make a guess |
| Courageous | brave |
