Legitimate and needy vaccine inoculation is permitted. 允许使用合法且需要的疫苗接种。
Maternal transmission is the primary reason for vaccine failure and is the challenge that needs to be addressed in future vaccination programs. 母婴传播是疫苗失败的主要原因，也是将来疫苗接种计划需要考虑的一项挑战。
