Identify what is common among the following diseases: Chickenpox, Influenza, Measles
What are the common means by which diseases such as common cold and chickenpox spread?
Refer to the given group of diseases. (i) Cholera, Tetanus, Tuberculosis, Typhoid (ii) Measles, Small pox, Polio, Influenza (iii) Malaria, Kala-azar, Sleeping sickness
Select the option that correctly classify these group of diseases