China on Jan. 23 reported a slight increase in new cases of Covid-19 as the country marked the anniversary of the world’s first coronavirus lockdown, in the city of Wuhan where the disease emerged in late 2019.

The United States called on China to allow an expert team from the World Health Organization (WHO) to interview “care givers, former patients and lab workers” in the central city of Wuhan, and ensure its access to medical data and samples.

A roundup of scientific studies on the novel coronavirus and efforts to find treatments and vaccines includes research on Covid-19 patients who still have symptoms 6 months after falling ill.

A World Health Organization team of international experts tasked with investigating the origins of the Covid-19 pandemic will arrive in China on Jan. 14, Chinese authorities said.

The number of people who have been infected with Covid-19 in the Chinese city of Wuhan – where the virus was first identified – could be around three times the official figure, according to a study by researchers based in the city.

The new coronavirus was circulating in Italy during September 2019, a study by the National Cancer Institute (INT) of the Italian city of Milan shows, signaling that it might have spread beyond China earlier than believed.

Roughly one in 10 people may have been infected with the coronavirus, leaving the vast majority of the world’s population vulnerable to the Covid-19 disease it causes, the World Health Organization said.

The National Institute of Health (NIH) reinstated a $7.5 million grant to the nonprofit research organization EcoHealth Alliance.

Coronavirus infections rose above 13 million across the world on Monday, according to a Reuters tally, climbing by one million in just five days in a pandemic that has killed more than half a million people.

Global coronavirus cases exceeded 10 million on Sunday according to a Reuters tally, marking a major milestone in the spread of the respiratory disease that has so far killed almost half a million people in seven months.