1. Causal agent :Chickenpox (chicken pox), also known as varicella, is a highly contagious infection caused by the varicella zoster virus.
2. This disease spreads through air and contact with an infected person.
3. Symptoms: A appearance of rashes on the whole body, fever, headache and tiredness.
4. Prevention and treatment: The chickenpox (Varicella) vaccine is the best way to prevent chickenpox. Special attention should be given to the infected persons.