Ben Embarek said the WHO experts visited and discussed with different laboratories in Wuhan, and learned that none of the labs was working or had the SARS-CoV-2 in their collections, which is in line with what other laboratories around the world have said - that "this virus had not been worked with knowingly in any of labs around the world working with coronaviruses".
"The mission has achieved a better understanding of the early days of the pandemic, and identified areas for further analysis and research", he added.
Dr Embarek told a press conference the investigation had uncovered new information but had not dramatically changed the picture of the outbreak.
"This will help to improve the understanding, surveillance and clinical management of the condition, " the director general said.
China reported the first COVID-19 case in the central Chinese city of Wuhan in late December 2019 and since then the disease has snowballed into a pandemic, affecting 108,822,502 people with 2,396,283 deaths worldwide.
Tedros Adhanom Ghebreyesus says the number of reported cases of globally has declined for the fourth week in a row, and the number of deaths also fell for the second consecutive week.
He credited the declines to stringent public health measures being implemented.
India calls Rihanna and Greta Thunberg 'irresponsible' over farmers' protest tweets
The police barricaded the road and some protesters tried to push their way through, but were blocked by a heavy police presence. In their statement, the MEA said that comments by celebrities tweeting on the issue were "neither accurate nor responsible".
In most cases, she said, it would be usual for outsiders to get access to "aggregated data". Because these tests were delayed for so long, it became impossible to determine if they were suffering from coronavirus or a respiratory ailment with similar symptoms.
Further research is also needed to drill down into how many COVID-19 sufferers who did not require Intensive Care Unit (ICU) treatment still went on to develop the condition.
"This illness affects patients with both severe and mild Covid-19", he said. World Health Organization will continue to monitor the situation and provide updates as new data become available.
"We're looking forward to receiving the report and data from the World Health Organization investigation".
Price continued, "Clearly, the Chinese, at least heretofore, had not offered the requisite transparency that we need-and that, just as importantly, the global community needs-so that we can prevent these sorts of pandemics from ever happening again".
"This supply agreement allows UNICEF to procure up to 40 million doses that have been secured under the COVAX Facility's Advance Purchase Agreement with Pfizer/BioNTech to be available throughout 2021", the United Nations agency said in a statement.
This week, South Africa announced that it will pause the roll-out of the Oxford/AstraZeneca vaccine because of a study indicating that the vaccine is less effective in preventing mild and moderate infection with the 501Y.V2 variant that is dominant in the country.
