This looks like it should be real. A young healthy patient was apparently reinfected with SARSCoV2 4.5 months after the first infection, this time with a different strain of virus. https://twitter.com/cwylilian/status/1297830744509698050

This is not to be alarmist - the broad consensus was that reinfection would be possible. It should however cause many people to reevaluate their assumptions about “herd immunity”.

What sets this report apart: sequencing demonstrated that it was a different strain of virus on the second infection. Many previous reports could not prove that patients didn’t just have residual RNA from their prior infection.

Of note: this patient had symptomatic infection the first time and remained totally asymptomatic the second time, which is consistent with adaptive immunity being present even though infection was not neutralized

Since there’s going to be a lot of concern about this study today: by way of reassurance I think this story should just convince you that continued aggressive public health measures leading to an effective vaccine are the path forward. Magical thinking is not.