Question

Ravi visited a blood donation camp in a village. In spite of a syringe being available in the camp, he purchased a new syringe from a chemist. There he saw the doctor sterilizing the syringe before it is being administered to other people. In the camp, he also came to know that he is a universal donor.
(i) He took that precaution against an infectious diseases. Identify them.
(ii) Why did the doctor sterilize the syringe?
(iii) What is the blood group of Ravi?

• A. (i)- AIDS; (ii)- to avoid infections, (iii)- $O^{-}$
• B. (i)- AIDS; (ii)- to avoid infections, (iii)- $A{B}^{+}$
• C. (i)- plague; (ii)- to avoid infections, (iii)- $A{B}^{+}$
• D. (i)- hepatitis; (ii)- to avoid infections, (iii)- $O^{+}$

Answer 1

The correct option is A (i)- AIDS; (ii)- to avoid infections, (iii)- $O^{-}$

The HIV virus which causes AIDS is commonly transmitted through body fluid by unprotected sexual activity, blood transfusions, hypodermic needles. The best way to avoid HIV infection is to use a new (sterile) needle and syringe each and every time of injection. Syringes are not designed to be used more than once. We should never share a needle, syringe, or cotton with anyone. With regard to transfusions of packed red blood cells, individuals with type O Rh negative blood groups are called universal donors.

Therefore, the correct answer is option A.