Health experts in Jilin province said a batch of rabies vaccine that the province used last year was safe, even though three people who were inoculated with the batch are now comatose.

The three cases comprise two boys, aged 12 and 9, and a 55-year-old woman. All had four rabies vaccinations at the center for disease control and prevention in Baishan. The vaccines were all from the same batch from Jilin Maifeng Biopharmaceutical Co.

From September to November, the three developed fever days after they each had their fourth shots before becoming comatose.