Animize Animation | 2D Animation Vedio |Types of Diseases

Animize Animation | 2D Animation Vedio
Any idea why some Diseases spread easily through contact, while some do not spread at all? Why are some Diseases contagious while others do not get caught with mere communication?

Watch this video to find the answers and to understand types of Diseases, Infectious diseases, non-infectious diseases, chronic diseases, and disorders.