China is aiming to hire 10,000 health care workers along with 2,000 military medical personnel, to help contend with a COVID-19 outbreak in the country’s largest city. Authorities carried out COVID-19 tests for all of Shanghai’s 26 million residents, and officials said the city-wide testing drive was completed as of Monday evening.

Shanghai has been under a two-phase lockdown for two weeks. Officials said a lockdown would remain in place as the results of the mass-testing are evaluated.

The Associated Press cited a Chinese military publication reporting that over 2,000 members of the army, navy and support staff arrived in Shanghai on Sunday.

The measures are considered to be the largest public health response since tackling the initial outbreak in Wuhan.

Meanwhile, Shanghai health officials on Monday defended separating babies and young children from their parents in the event of testing positive for COVID-19. According to the policy, anyone testing positive must be isolated from those who haven’t, regardless of whether they have mild symptoms or are asymptomatic.