beijing china has reported 17 new coronavirus cases including 12 asymptomatic infections while officials in wuhan where the outbreak originated continued vigorous testing of its over 11 million residents after new clusters of covid19 emerged in parts of the citychinas national health commission nhc on sunday said five of the new coronavirus cases including three domestically transmitted were recorded in jilin province on saturdayjilin city went into a lockdown this week after a cluster of new coronavirus cases were reportedthe 17 new cases include 12 asymptomatic patients taking the number of such infections to 515 the nhc saidone of the new asymptomatic patients came from abroad it saidasymptomatic cases refer to people who are tested covid19 positive but develop no symptoms such as fever cough or sore throat however they pose a risk of spreading the disease to othersas of saturday the number of coronavirus cases stood at 82947 in china of the total cases 86 patients were being treated while 78227 people had been discharged from hospitals after recoverythe deadly virus has claimed 4634 lives in the country the nhc saidmeanwhile wuhan where officials are conducting a massive campaign to test its over 11 million population has not reported any new coronavirus infection on saturdayhowever the city where the virus first emerged in december last year before it spread across the world and wreaked havoc has over 400 asymptomatic cases which sparked concern over a rebound of the virusby saturday wuhan had six covid19 cases including two in critical condition local health commission said on sundayexplaining the recent resurgence of the coronavirus cases in the country nhc officials said in the first half of may most of the domestically transmitted cases of covid19 in china came from clustered infectionsasymptomatic cases were reported in various places across the country during the period nhc spokesperson mi feng told reporters here on saturdayin the first half of may a total of 39 domestically transmitted cases and 194 asymptomatic cases were reported in china down 46 per cent and 62 per cent respectively from the second half of april mi saidshe stressed on efforts to improve nucleic acid testing capabilities and step up screening review quarantine and management of asymptomatic cases