Dengue is caused by a

1. Protozoan
2. Virus
3. Worm
4. Fungus

The idea of vaccination was conceived by

1. Charles Darwin
2. Alexander Fleming
3. Issac Newton
4. Edward Jenner

Which one of the following is not a psychotropic drug?

1. Morphine
2. Cocaine
3. Heroin
4. Penicillin

Which one of the following is a communicable disease?

1. Measles
2. Cancer
3. Heart attack
4. Allergy