contagious

M-is a contagious disease.

It's a highly contagious infection.

He's got a contagious laugh.

People with contagious diseases should be isolated.

racism is likened to a contagious disease.

Zack Lemann, Visitor Programs Manager at the Audubon Insectarium, goes on to explain the exhibits with contagious enthusiasm.

Exploring diversifying and effective schema to prevent and cure contagious diseases of Laryngology, such as diphtheria and scarlet fever;