Edu-fact: In $1875$, Rudolf Steiner demonstrated that chickenpox was caused by an infectious agent by inoculating volunteers with the vesicular fluid from a patient with acute varicella.
Chickenpox is usually acquired by the _____ of airborne respiratory droplets from an infected host.

The common cold is mostly caused by Rhinoviruses. Which of the following treatments will provide the best cure for this infectious agent?

Name the disease caused by the following organism:

Rhino virus

Draw a well-labelled diagram to show replication of HIV in human cells. 

Identify the name of the following disease the child is suffering from. (Jaundice/Measles/Goitre)

Unscramble the word XOPENKCIHC using the hint given below:

It is a disease that spread through air.

Represent the union of two sets by Venn diagram for each of the following.

$X=\{x | x$ is a prime number between $80$ and $100\}$

$Y=\{y | y$ is an odd number between $90$ and $100\}$

Which of the following options gives the incorrect matching of a disease with its causative organism and mode of infection?