BCG and chickenpox vaccines are completely different vaccines, where BCG is used to prevent tuberculosis. Tuberculosis includes many kinds of tuberculosis such as pulmonary tuberculosis and tuberculous meningitis. The manifestations of pulmonary tuberculosis are fever, coughing, and shadowing of the lungs, and the manifestations of tuberculous meningitis are headache, vomiting, fever, cramps, and coma, etc. The BCG vaccine is the first vaccine that newborns are vaccinated with after they are born. Chickenpox vaccine is to prevent chickenpox. The manifestations of chickenpox are fever, rash all over the body, and symptoms of itching. Chickenpox and tuberculosis are two different diseases, so BCG and chickenpox vaccine are two different vaccines.