BEIJING -- A total of 22.77 million doses of COVID-19 vaccines had been administered in China by Tuesday, the National Health Commission said here on Jan 27.

Zeng Yixin, deputy head of the commission, made the announcement at a press conference held by the State Council joint prevention and control mechanism against COVID-19.

Health authorities are strengthening the management of vaccinations and using an information system on vaccination planning to trace every dose, according to Zeng.

Medical workers at vaccination sites were also asked to closely monitor and report all possible adverse reactions in accordance with due procedures.

On the epidemic response in rural areas, Zeng stressed the training of medical forces at the grassroots levels, especially rural doctors, to help them identify suspected symptoms.