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
Foreign animal disease Foreign animal disease A Foreign animal disease (FAD) is an animal disease or pest, whether terrestrial or aquatic, not known to exist in the United States or its territories. When these diseases can significantly affect human health or animal production and when there is significant economic cost for disease control and eradication efforts, they are considered a threat to the United States. Another term gaining preference to be used is Transboundary Animal Disease (TAD), which is defined as "those epidemic diseases which are highly contagious or transmissible and have the potential for very rapid spread, irrespective of national borders, causing