What happens in chickenpox, exactly?

What is it? Chickenpox is a very contagious viral disease. It is known for the small, itchy blisters it causes. Other common symptoms include fever, tiredness and headache. Chickenpox is very common – in 2013 about 140 million cases occurred worldwide. However, practically everyone went through the disease before the chickenpox vaccine was developed, and the… Continue reading What happens in chickenpox, exactly?