It is all bs..
From the Wall Street Journal.....
Delta Variant
There’s no sign of a surge in hospitalization or severe illness, and the vaccines remain extremely effective.
Cashman told reporters "most" of the six players were previously vaccinated. Urshela was vaccinated earlier this season (he spent one day on the COVID list with vaccine side effects in May). The Yankees were reportedly one of the first teams to clear the vaccine threshold (85 percent of tier-1 individuals) that allows for looser adherence to MLB's protocols. This is their second instance of positive tests since, with several coaches having to miss time in May following so-called "breakthrough infections." As experts have since explained, **********the purpose of ***a*** vaccination is to reduce the severity of the infection rather than eliminate the possibility altogether*************; from that perspective, the COVID-19 vaccines worked as intended, with nearly all of those cases being asymptomatic in nature.