The disease will usually be kept in a "safe room" that is completely air tight so the disease cannot react with chemicals in the air. When going to study the disease doctors/scientists must wear a protective, HAZMAT suit. This is aesthetically similar to an astronaut suit and it also has it's own oxygen filtration system and emergency oxygen.
Misuse of drugs is dangerous. Not keeping to the recommended dosage, especially not following your doctor's instructions, is also dangerous.
by keeping it pure and treating it
When keeping straw, or hay, or other flammable objects in a barn, take precautions for you and your animals safety-wise by having a fire extinguisher and a quick way to get out.
Keeping milk in a fridge is the best precaution. Also use the milk in a reasonable time.
we can prevent this with keeping our body healthy.
Some precautions that someone can take to avoid motorcycle injury is to obey all traffic signs and laws and by all means, wear a helmet. Keeping your motorcycle well maintained also helps to avoid injury.
helping from keeping the world from over-populating
Homeostasis is when your body is keeping up balance of internal and external health. Disease is when a foreign body is attempting to destroy the body.
There is information available on the internet about the need to take precautions with all knives. This also covers information on keeping knives in display cases. They state that display cases for knives should be locked at all times as a safety precaution.
I think Chucks job is keeping Thomas safe from dangerous people that are in the maze.
Mercury barometer precaution
You can reduce the risk of secondary infection of chickenpox lesions by keeping nails short and hands clean, and by gently bathing regularly.