NYC hired 3,000 workers for contact tracing. It's not going well.

The city has hired 3,000 disease detectives and case monitors, who are supposed to identify anyone who has come into contact with the hundreds of people who are still testing positive for the virus in the city every day. But the first statistics from the program, which began on June 1, indicate that tracers are often unable to locate infected people or gather information from them.

Only 35 percent of the 5,347 city residents who tested positive or were presumed positive for Covid-19 in the program’s first two weeks gave information about close contacts to tracers, the city said in releasing the first statistics…

The city’s program has so far been limited by a low response rate, scant use of technology, privacy concerns and a far less sweeping mandate than that in some other countries, where apartment buildings, stores, restaurants and other private businesses are often required to collect visitors’ personal information, which makes tracking the spread easier.

China, South Korea and Germany and other countries have set up extensive tracking programs that have helped officials make major strides in reducing the outbreak.