Questions and answers

What is the coronavirus cause?

Where did the coronavirus come from and when did it start? 

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Coronavirus Cause

It took some time to figure out for authorities what was the coronavirus cause but now we can say where it came from. The coronavirus most likely came from a local seafood market in Huanan, China. It was also suggested that bats were responsible for the virus but this has not been officially confirmed. 

Many of those initially infected either worked or frequently shopped in the Huanan seafood wholesale market in the centre of the Chinese city, which also sold live and newly slaughtered animals.

A market selling live animals for food was also blamed in the SARS outbreak in 2003; such markets are considered to be incubators for novel pathogens.The outbreak has prompted a temporary ban on the trade and consumption of wild animals in China.However, some researchers have suggested that the Huanan Seafood Market may not be the original source of viral transmission to humans.

Research into the origin of the 2003 SARS outbreak has resulted in the discovery of many SARS-like bat coronaviruses, most originating in the Rhinolophus genus of horseshoe bats. Two genome sequences from Rhinolophus sinicus published in 2015 and 2017 show a resemblance of 80% to 2019-nCoV. 

A third virus genome from Rhinolophus affinis, “RaTG13” collected in Yunnan province, has a 96% resemblance to 2019-nCoV. For comparison, this amount of variation among viruses is similar to the amount of mutation observed over ten years in the H3N2 human influenza virus strain.

Researchers from Guangzhou claim to have found a “99% identical” viral genome in a pangolin sample. As of 12 February 2020, the sequence remains unavailable, and all information comes from a university announcement.[39] Pangolins are protected under Chinese law, but poaching and trading of pangolins for traditional medicine remains common. 

A metagenomic study published in 2019 previously revealed that SARS-CoV was the most widely distributed coronavirus among a sample of Malayan pangolins.Microbiologists and geneticists in Texas have independently found evidence of recombination in coronaviruses suggesting pangolin origins of SARS-CoV-2; they acknowledged remaining unknown factors while urging continued examination of other mammals.

What else can I do to protect myself from the coronavirus?

We’ve prepared a detailed guide on all basics on how to protect yourself from the coronavirus here:

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