Lot release volume of class I vaccines in China 2013-2020

In 2020, 350 million doses of class I vaccines were released in China. Although a slight increase from the previous two years, the number was still lower than the figures from before 2017. In China, class I vaccines are free and mandatory vaccines provided by the government, mainly aiming at preventing diseases among children. Hepatitis B vaccine is the most widely adopted class I vaccine type.

2020年，中国共发布了3.5亿剂I类疫苗。尽管相较于前两年有所上升，但这一数字仍低于2017年以前的记录。在中国，I类疫苗由政府免费提供，属于强制接种的疫苗，主要目的是预防儿童疾病。乙型肝炎疫苗是应用最广泛的I类疫苗类型。