How to check the batch number of pediatric vaccines?

Discuss whether imported or domestic pediatric vaccines should be used, and analyze the effectiveness of the imported chickenpox vaccine

Infants aged 1-6 months need to receive three doses of the pneumococcal vaccine, with each dose administered 1-2 months apart. At 12-15 months, the fifth dose is administered. Children aged 1-5 years only need one dose.