Edward Jenner in $1796$ produced the first vaccine against . . . . . . .

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.

What is essential to understand before the effective treatment of a disease?

The $ELISA$ technique is used to detect which of the following?

The insect considered to be the greatest mechanical carrier of diseases is . . . . . . .

$A$ : $ELISA$ can enable very easy detection of infection through antigen-antibody interaction.
$R$ : It is a nucleic acid-based diagnostic tool that can confirm the presence of an infectious microbe at early stages.