Updated On: 15 December, 2022 09:39 AM IST | Switzerland | ANI
Three years after its emergence in China`s Wuhan, exactly how SARS-CoV-2 first emerged as a respiratory pathogen capable of sustained human-to-human transmission remains the subject of active debate.

World Health Organization. Pic/AFP
World Health Organization (WHO) head Tedros Adhanom Ghebreyesus on Wednesday called on China to share the requested data concerning Covid-19 in a bid to understand the origins of the virus.
"We continue to call on China to share the data and conduct the studies that we have requested, to better understand the origins of this virus," the WHO chief told a media briefing, as quoted in a statement on the organization`s website.