Childhood immunizations in the United States Side effects of this vaccine can include: More severe symptoms may include Varicella spreads person to person through the air from coughing or sneezing, touching or breathing in the virus that comes from the chickenpox blisters, and can be spread from people with Shingles. It takes 10 to 21 days after exposure to develop symptoms and it lasts about 5–10 days. For the most part, getting the chickenpox provides immunity for life. Although uncommon, it is possible for some people to get chickenpox more than once. Symptoms of the varicella disease may include Complications that can arise are Some people
Contagious disease illustrated classically by tuberculosis, which is clearly transmissible from person to person, but was not classically considered a contagious disease. In the present day, most sexually transmitted diseases are considered contagious, but only some of them are subject to medical isolation. Originally, the term referred to a "contagion" (a derivative of 'contact') or disease transmissible only by direct physical contact. In the modern day, the term has sometimes been broadened to encompass "any" communicable or infectious disease. Often the word can only be understood in context, where it is used to emphasise very infectious, easily transmitted, or especially severe communicable