China's top legislature on Saturday passed a law on vaccine administration, which stipulates the "strictest" management by requiring a whole-process supervision system and toughening penalties on producing and selling fake or substandard vaccines.

A medical worker holds a measles-rubella (MR) vaccine. [File photo: AFP]

The law was adopted after the third reading at a bimonthly session of the Standing Committee of the National People's Congress, which closed on Saturday.

As the country's first legislation dedicated to vaccine management, the new law will go into effect on Dec. 1, 2019.