Photo: Website of Obstetrics & Gynecology Hospital of Fudan University

Obstetrics & Gynecology Hospital of Fudan University in Shanghai announced early Tuesday morning that all the nucleic acid testing results returned negative after double check on the previous suspected COVID-19 samples found on Monday. 

The hospital, which receives patients from across the country, has previously suspended its services and locked down two downtown divisions after suspected cases of COVID-19 were detected on Monday, becoming the third top-tier hospital in Shanghai locked down since the resurgence of the coronavirus in the city. 

The two divisions will resume operation on Tuesday, according to the hospital.

The hospital announced on Monday night that the hospital found some "unqualified" samples in its regular nucleic acid testing of the whole hospital and the samples were under review, with epidemiological specialists from the city's center for disease control and prevention working on the site.

The hospital, also known as Shanghai Red House Hospital, is China's first hospital specializing in obstetrics and gynecology. Statistics from the hospital's official website show that its yearly outpatient visits reach 1.7 million with 74,000 inpatients. 

An unverified video previously circulated on the internet shows that two divisions in downtown Huangpu and Yangpu districts were locked down after one suspected sample of coronavirus was detected in its Yangpu division. Staff work at both divisions on different shifts. 

Fudan University Shanghai Cancer Center and Renji Hospital, affiliated to Shanghai Jiao Tong University School of Medicine, have locked down their downtown divisions since January 21,  where two people working at the hospitals were found infected with COVID-19.

According to Shanghai's health authority, the two COVID-19 patients hadn't received COVID-19 vaccination before they were infected with the virus.