BEIJING, May 4  -- Chinese government on Monday issued a circular to enhance the nation's management of vaccines and vaccination.

The circular, released by the National Health and Family Planning Commission, said a full record of the supply of vaccines, check results and their temperatures in delivery and storage should be established and kept until two years after the vaccines have expired.

The document also called for objective content in the publicity of vaccinations, banning information that indicated the manufacturer and distributors of the vaccines.

It also banned the content comparing the safety of different vaccines as well as disseminating products that are not vaccines, including the therapeutic biological products.

Treating therapeutic biological products as vaccines and promoting them is not allowed.