The actual fact is that the people’s understanding of chicken pox may be the following misconceptions: Misconception 1: chicken pox patients are only contagious when they have a rash. In fact, patients often have fever, headache, sneezing and other symptoms of upper respiratory tract infection before the rash, from a week before the rash to about a week after the rash is contagious. The first thing you need to do is to get a good idea of what you are doing. The actual fact is not, the general body after the occurrence of chickenpox will produce lifelong immunity, adults re-infection is indeed rare, but in malnutrition, malignancy, leukemia, diabetes and long-term use of immunosuppressants, glucocorticoids and other cases of the body’s immunity decline can not exclude the possibility of secondary infection. In addition, because the varicella zoster virus infection can be long-term latent in the ganglion, when the body resistance or fatigue, cold, the virus can replicate again, manifested as herpes zoster. The first thing you need to do is to get a good idea of what you are getting into. The fact is just the opposite, generally speaking, adult chickenpox fever, headache and other symptoms are more significant, the symptoms of systemic toxicity is heavier, the number of rash is more, and more likely to appear pneumonia, encephalitis and other complications, if not timely and effective treatment, and may even secondary sepsis and other life-threatening. Finally, remind everyone to be aware of prevention, as little as possible to public places where people gather, pay attention to ventilation at home, avoid contact with chickenpox patients, children over 1 year old who have not had chickenpox can go to the hospital to get vaccinated against chickenpox.