Vaccines are prepared from which of the following?

What is the full form of $WHO$?

Which of the following statements are correct?
$(1)$ Yoga is practiced to achieve physical and mental health.
$(2)$ Infectious diseases are very common; all of us have suffered from one or the other at some time.
$(3)$ $AIDS$ is an infectious disease.
$(4)$ Cancer is a non-infectious disease.
$(5)$ $A$ healthy person contributes to economic prosperity.

Which diseases are spread by the $Aedes$ mosquito?

Malfunctioning of the body or parts of the body with specific signs and symptoms is known as:

$A$ widely but periodically occurring plant disease is known as: