-- China is facing new spikes in sporadic COVID-19 infections, as the country recorded 328 new locally transmitted confirmed cases in the past month, a number almost equal to its total number in the previous five months.

-- The new round of infections started on July 20 when some airport cleaners in Nanjing, east China's Jiangsu Province, tested positive during routine testing.

-- Viral genome sequencing found all the strains to be the highly infectious Delta variant and cities hit by the recent resurgence have promptly taken action to curb the spread of the coronavirus.