Read the following statements and choose the correct option 1. Vaccination and immunization programs have completely eradicated diseases like chickenpox. 2. Biotechnology is playing a key role in developing newer and safer vaccines. 3. The use of antibiotics has no effect on the treatment of infectious diseases. 4. Vaccines have controlled diseases like polio, diphtheria, and tetanus to a large extent. 5. Dengue and

Step-by-step solution

The advancements made in biological science have armed us to effectively deal with many infectious diseases. The use of vaccines and immunisation programmes have enabled us to completely eradicate a deadly disease like smallpox. A large number of other infectious diseases like polio, diphtheria, pneumonia and tetanus have been controlled to a large extent by the use of vaccines. Biotechnology (about which you will read more in Chapter 10) is at the verge of making available newer and safer vaccines. Discovery of an