What is chickenpox?
Chickenpox is a very contagious disease caused by a virus. This virus usually infects children. Older children and adults can also become infected if they haven’t already and chickenpox.

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1. What is chickenpox?
2. What are the symptoms of chickenpox?
3. How is chickenpox spread?
4. How serious is chickenpox?
5. Who should get chickenpox vaccine?
6. How safe is chickenpox vaccine?
7. Does the vaccine have side effects?