North China's Tianjin Municipality reported one new asymptomatic case of COVID-19 Tuesday, local health authorities said.

Medical workers wait to take swab samples from residents in Hangu Street of Binhai New Area, north China's Tianjin Municipality, Nov. 10, 2020. (Photo: Xinhua)

The carrier is a 48-year-old male cold-chain worker at the Dongjiang port in the city's Binhai New Area, said the Tianjin Centers for Disease Control and Prevention.

The man tested positive for the novel coronavirus around 10 a.m. Tuesday during a screening of nucleic acid tests for cold-chain workers and frozen goods in Tianjin. He has been transferred to a designated hospital.

After a preliminary epidemiological investigation, 14 close contacts of the worker have been sent to a designated isolation point. His residential area and workplace have been closed.