Across
- 2. world health organization
- 3. a blood protein produced in response to and counteracting a specific antigen
- 5. protective covering for the mouth, nose and eyes
- 8. branch of medicine which deals with the incidence, distribution, and possible control of diseases
- 9. very thorough or vigorous
- 10. transported by air
Down
- 1. contagious or infectious
- 4. a person receiving medical treatment
- 6. evaluation or investigation of something as part of a methodical survey
- 7. a sign of the existence of something, especially of an undesirable situation