BEIJING - Prosecutors in eastern China's Zhejiang and Shandong provinces are investigating recent hospital malpractice that caused infections, according to the Supreme People's Procuratorate Friday.

The procuratorate said that it had been closely watching the latest developments in the investigation and asked for early intervention by local prosecuting departments to help police objectively collect evidence.

In early February, five people were found infected with HIV after a technician at Zhejiang Traditional Chinese Medicine Hospital reused pipettes on separate patients, according to Zhejiang provincial health and family planning commission.

In Shandong, a total of nine patients were infected by hepatitis B in January after medical staff at the hospital's hemodialysis unit were negligent.