Medicalxpress.com recently published an alarming case in which at least 145 children were administered expired polio vaccines in China, state media reported, despite the government promising to prevent such lapses in the industry following a major scandal last year.

Three county-level health officials in Jiangsu province have been dismissed since the case came to light earlier this week—the latest to raise public health concerns—according to an announcement by the Jinhu county government.

A parent discovered earlier this week that a batch of polio vaccines were being given to children at a county-run health facility nearly one month after their December 11 expiration date, state broadcaster CCTV reported on Thursday.

The local government has since found 145 children received the vaccines between December 11 and January 7, CCTV said, quoting a government source.

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