The Beijing government says it has prevented a new outbreak and will lift restrictions on travel to most residential areas from tonight.

Beijing police spokesman Pan Xuhong announced today that all residents in the "low risk" area could leave the city without a negative nCoV test result from tomorrow.

"The city's massive traceability campaign has cut the path of virus infection with fewer than three new infections detected every day recently," Pan said, confirming "the risk factor has been greatly reduced.

The announcement came days after the Beijing authorities announced an order to blockade some "low-risk" residential areas after more than three million samples were collected.

Beijing official Zhang Qiang said on the same day that the government conducted the nCoV test with more than 10 million people, nearly half of the city's population, from June 11 to July 3.

Dozens of residential areas across Beijing were imposed a blockade last month, while officials launched a widespread testing campaign to detect undetected cases of nCoV.

The outbreak has made Beijing the most serious outbreak in China since February, forcing people who are preparing to return to normal life to face the stress they experienced four months ago.

However, many experts also believe that the Beijing outbreak may not be as serious as Wuhan, because city officials soon implemented control measures.

Covid-19 has appeared in more than 210 countries and territories, causing more than 11 million people infected, more than 525,000 deaths and more than 6.1 million people recover.