Dr Yeung Ho Hong 楊浩康 醫生 health-prevention-info

Varicella Vaccine (水痘疫苗)

Dr. Yeung Ho Hong (楊浩康醫生) 2022-3-18

Varicella Vaccine (水痘疫苗)


Chickenpox is a highly contagious disease. It is caused by the varicella-zoster virus and can be spread through respiratory droplets or contact with a patient's vesicle fluid. Common symptoms include fever, itchy rash and vesicles. It usually starts on the skin of the head and face, and spreads to the body and extremities. Patients usually recover spontaneously within 2 to 4 weeks.

In healthy children, most chickenpox symptoms are mild. However, if a pregnant woman is infected with chickenpox in early pregnancy, it may cause congenital defects in the fetus. Adults and people with impaired immune systems may develop more severe illness or other complications such as meningitis, encephalitis or pneumonia.

There is a varicella vaccine that can effectively prevent chickenpox, and children should receive two doses of the varicella vaccine. In general, the monovalent chickenpox vaccine is very safe. Possible side effects include injection site redness, pain, or a localized rash, fever, or rash all over the body. After children get the varicella vaccine, medications that contain salicylic acid (such as aspirin) should be avoided for six weeks.