Because the chickenpox vaccine is 70 to 90 percent effective, a modified chickenpox virus, known as breakthrough disease, can occur in some vaccinated persons.
Symptoms of breakthrough disease are almost always minor, with mild or no fever, and a rash with fewer than 50 skin lesions. The symptoms of breakthrough disease also do not last as long as regular symptoms of chickenpox.
Previous
Add this article to your Favorites
Email this article
Print