Coronavirus Origin? Five Mysteries That Remain

According to a recently published article on Nature, with the WHO team investigating the origins of Covid-19, there are still few key questions unanswered about when, where and how the pandemic began.

The World Health Organization (WHO) team investigating the origins of the COVID-19 pandemic concluded that the coronavirus probably originated in bats and passed to people through an intermediate animal.  But fundamental questions remain about when, where and how...

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