The name of that disease is Herpes zoster.
genital herpes
It is known as an Epidemic
Yes.
This disease, also known as oral herpes or fever blisters, can occur anywhere on the body.
Philadelphia
ebirus
A large outbreak of the deadly disease of cholera.
Friction can cause blisters, yes - however, many sexual diseases cause blisters as well. If you have blisters on your sexual organs, you should see a doctor to make sure it's not a disease.
Not every person exposed to a disease will get the disease. This may be due to
Epidemic is an outbreak of a disease in a particular area.
rapidly
Natural Disaster