Some coronaviruses are passed on easily from person to person, while others are not.
Little is known about WN-CoV at this stage and investigations are ongoing but it is “reasonable to assume” the strand could be passed on between animals and humans, according to government advice.
That’s because many cases were associated with a market containing a range of dead and live animals.
According to PHE, authorities in China reported on January that an infected man had worked in the Huanan seafood market, but his wife, who is also a confirmed case, denied having been to the same market.
This means it is possible that there is limited human-to-human transmission within a family setting, but investigations are ongoing.
Other coronaviruses are airborne and can be passed on between humans.
The World Health Organization is not currently recommending any trade or travel restrictions, based on information available.
When a disease is new, there is no vaccine until one is developed.
It can take a number of years for a new vaccine to be developed, according to WHO.