How do AIDS problems in different countries relate to each other?
Ans. They are related in at least three ways. First, in every country, AIDS is always spread by a virus transmitted through sexual intercourse and through blood. Specific actions by people are therefore required for it to spread in all countries. Second, AIDS can be prevented in all countries by people if they change their sexual behaviour, by screening blood for transfusion, and by sterilising needles and syringes.