Modes of AIDS Spread

Q. Which of the following is a mode of transmission of AIDS?

1. Sharing drinking glasses
2. Sweat
3. Sharing food or utensils
4. Blood transfusion

Q. AIDS is characterized by

1. decrease in the number of killer T-cells
2. increase in the number of helper T-cells
3. decrease in the number of supressor T-cells
4. decrease in the number of helper T-cells