The sudden increase in occurrences of the disease has raised questions relating to its origin , wildlife trade , uncertainties surrounding the virus 's ability to spread and cause harm , whether the virus has been circulating for longer than previously thought , and the possibility of the outbreak being a super-spreader event .
Several questions were raised as a result of the coronavirus outbreak including where it comes from , how it spreads and causes harm , and how long has it been around for , among others .