Reports of reinfection shouldn't be cause for alarm. If we gather the right data, they can teach us a lot about the immune response.
A few people have developed COVID-19 twice. That doesn't mean a vaccine can't offer long-term protection.
This is just one person. Is he the exception? Is he the rule? We don't know yet for sure. But reinfection is definitely possible.
Scientists were not surprised by reports on coronavirus reinfection; the lack of symptoms on reinfection is encouraging.
Reports describe a Hong Kong man who was reinfected with the coronavirus after returning from Europe. Does that mean he wasn't immune after the first infection?