An example of contagious diffusion is the spread of Islam from Mecca to all the other countries around it.
Among other things, it could be shingles (which might be contagious).
It depends, if they are treated they are no longer contagious. If they are infected or not treated they can be spread to other humans.
Its not contagious, its spread to other susceptible hosts indirectly through the fecal-oral route
No, UTIs are not contagious through kissing nor any other contact.
Yes, it is contagious with dogs but not to humans, and usually not to other pets.
Poison ivy (itchy) Mushrooms (poison) Bombs (BOOM) Contagious things (bleugh!)
Many including Pneumonia are contagious to other guinea pigs, if you have suspicions that your guinea pig is sick separate it from the others just in case they get it. But if you are thinking contagious to humans than the answer is no.
No, just blacks.
Hodgkin's lymphoma, or disease, is inherited from the patient's parents. Like any other cancer, it is not contagious, as far as anyone knows.
Yes
This is not a contagious disease.The virus is contagious.