The scientific method is a body of techniques for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge. To be termed scientific, a method of inquiry is commonly based on empirical or measurable evidence subject to specific principles of reasoning.
Chickenpox (varicella) is a contagious illness that causes an itchy rash and red spots or blisters (pox) all over the body. Chickenpox can cause problems for pregnant women, newborns, teens and adults, and people who have immune system problems that make it hard for the body to fight infection.
Because chickenpox is very contagious, people who never had chickenpox or the vaccine can get it just by being in a room with someone who has it. However, brief exposure is not likely to result in infection. The chickenpox virus stays in the body and can reawaken later to cause shingles. FACT: Adults are more likely than children to die or have serious complications if they get chickenpox. 2  FACT: Chickenpox can be prevented with a vaccine. 3  Sometimes vaccinated persons come down with chickenpox but the illness is usually mild with fewer than 50 lesions.