contagiousness

Mead most satisfactorily combats the opinions of the French physicians who maintained the non-contagiousness of the Plague.

In recent years the fact of its exhibiting a family tendency has been thought as much suggestive of contagiousness as of heredity.

The contagiousness of whooping cough continues about two months, or ceases before that time with the cessation of the cough.

Medical opinion in 1833 was decidedly adverse to the contagiousness of influenza.

Now that we know its contagiousness, however, it is comparatively easy to explain its occurrence in families.