Chengdu, the capital of southwestern China's Sichuan province, is on high alert after the city reported its first locally transmitted cases of Covid-19 in nine months, according to local authorities.
Chengdu’s Health Commission said a total of five people have tested positive.
A large-scale screening program was launched after one person tested positive, with nucleic acid samples collected from 24,598 people.
Of those, four came back positive and were either close contacts of the first patient or living in the same village in the Pidu district of the city. The results of 541 more tests are still pending.