Rohan was suffering from fever and cold. Doctor has advised blood test to diagnose the disease
In testing centre, Rohan asked the laboratory person to wear gloves and sterilise the needle before taking his sample.
On the basis of the above example, answer the following questions
- What could happen if the needle was not sterilised?
- What other precautionary measures one should take to ensure good health?
- What values are shown by Rohan?