Doctor is exposed to more sick people than others in the community

A doctor/nurse/health-worker is

exposed to more sick people than others in the community. Find out how she/he avoids getting sick herself/himself. 

Answer: A doctor or a nurse or a health worker avoids getting sick by taking the following precautions: 

keep the work place (hospital and surroundings) sterilised. use sterilised equipments and disposable syringes. 

use hand gloves, masks and wash their hands after examining a patient. immunised themselves with different vaccinations. 

keep themselves fit by regular exercise and balanced diet. 

create awareness among co-workers and educate people about cleanliness, regular exercise and healthy diet.