Which of the following is not an example of a communicable disease?
Asthma
1 - Chickenpox is an infection that can spread when in contact with the person infected.
2 - Dengue is spread by mosquitoes.
3 - Asthma is mostly caused by environmental factors and is not spread from one person to another.
4 - Coughing or sneezing while having the flu can spread the germs and infect other people.