How it reached Iran and Italy. I saw on one news, the people who infected with the virus in both of those countries haven't visited China or never met a person who is coming from china.
And another news on ScienceAlert reported that, asymptomatic period could be more than two weeks since the new mutation.
There was a chinese woman contracted the virus, had spread it to five of her family member within a month. She haven't shown any symptoms.
This may have been the end of the world. Who knows.
Sadly, Sri Lankistanians are not aware or don't care about this.