(a) Doctor diagnosed that Radha was suffering from HIV -AIDS. List any two methods by which she might have contracted the disease. Name the organ affected by this disease.
(b) List one general mode of prevention of jaundice.
(c) It has been observed that despite the availability of the vaccine for Hepatitis A in the market, it may not be necessary to be given to children by the time they are 5 years old. Why?