[PhantomGremlin]

there have been a few rare cases of reinfection

I don't think the word "rare" applies any longer. Reinfection is becoming more common. Here is some info CDC released a few days ago: https://www.nytimes.com/2021/04/21/health/vaccine-nursing-ho...

An unvaccinated health care worker set off a Covid-19 outbreak at a nursing home in Kentucky where the vast majority of residents had been vaccinated, leading to dozens of infections, including 22 cases among residents and employees who were already fully vaccinated, a new study reported Wednesday.

[hammock]

That's not reinfection (later infection of recovered covid patients). That's infection among vaccinated people.