A Study of Combined Immunization With Live Attenuated Varicella Vaccine and Inactivated Hepatitis A Vaccine

Inclusion Criteria: * Healthy child aged 1 year old (12-15 months old); * Proven legal identity; * The subjects'guardians should be capable of understanding the informed consent form, and such form should be signed prior to enrolment. Exclusion Criteria: * History of vaccination of varicella vaccine or hepatitis A vaccine. * Previous history of varicella infection or hepatitis A infection; * History of asthma, history of allergy to the vaccine or vaccine components, or serious adverse reactions to the vaccine, such as urticaria, dyspnea, and angioedema; * Congenital malformations or developmental disorders, genetic defects, severe malnutrition, etc; * Thyroid disease or history of thyroidectomy, asplenia,functional asplenia,asplenia or splenectomy resulting from any condition; * Suffering from serious chronic diseases, serious cardiovascular diseases, liver and kidney diseases, malignant tumors, etc; * Family history of psychosis,severe neurological disease (epilepsy, convulsions or convulsions) or mental illness; * Diagnosed abnormal blood coagulation function (eg, lack of blood coagulation factors, blood coagulopathy, abnormal platelets) or obvious bruising or blood coagulation; * Immunosuppressive therapy, cytotoxic therapy, inhaled corticosteroids(excluding allergic rhinitis corticosteroid spray therapy, acute noncomplicated dermatitis superficial corticosteroid therapy) within 6 months before enrollment; * Receipt of blood products within the past 3 months; * Receipt of other investigational vaccines or drugs within 28 days prior to receiving the investigational vaccine; * Receipt of attenuated live vaccines in the past 28 days; * Receipt of inactivated or subunit vaccines in the past 7 days; * Onset of various acute or chronic diseases within 7 days prior to the study; * Armpit temperature in subjects with fever prior to vaccination with the investigational vaccine. 37.4 ℃; * According to the investigator's judgment, the subject has any other factors that are not suitable for participating in the clinical trial