Shanghai reported one COVID-19 case and one asymptomatic infection on Saturday, the city's health authorities said at a news briefing.

Both cases are inbound travelers – a 37-year-old female in the Qingpu district and a 35-year-old asymptomatic female in the Putuo district. By 4 pm Saturday, 261 close contacts and 527 secondary contacts of the infections had been identified and quarantined, with 456 of them testing negative so far.

Altogether 70 COVID-19 cases were reported in Shanghai during the weeklong National Day holiday from Oct 1 to 7, ans most of the infections are travelers from other provinces, said Wu Huanyu, deputy director of the Shanghai Municipal Center for Disease Control and Prevention.

Wu said Shanghai's COVID-19 cases don't involve the Omicron subvariant BF.7 so far.

BF.7 is reportedly more transmissible and contagious with enhanced immunity evasion than other Omicron subvariants.

Zhao Xiaojing contributed to the story.