I wish you had actually done a bit more reading , instead of relying on a computer generated article from India , that scraped info from a Chinese Website .
If you had looked further you would find this ( From NPR.com )
The good news is that the vaccines continue to be highly effective against the virus in preventing hospitalization and death from COVID-19. For instance, three studies from Canada, Singapore and Scotland have found that the Pfizer vaccine provides more than 90% protection against hospitalization and death.
Indeed, the Provincetown outbreak demonstrates the vaccines' effectiveness.
Alex Morse, town manager of Provincetown, said on Twitter that of the some 900 cases now linked to the cluster, "there have been no deaths, 7 hospitalizations, and the symptoms are largely mild." "Our positivity peaked at 15% on 7/15 and was only 4.8% yesterday. The outbreak is contained and Provincetown is safe," Morse added. As the delta variant continues to spread rapidly through the U.S., the CDC updated mask guidance now recommends people wear masks when inside public spaces in areas where the spread of the virus is "substantial" or "high," regardless of one's vaccination status.
https://www.npr.org/sections/coronavirus-live-updates/2021/07/30/1022867219/cdc-study-provincetown-delta-vaccinated-breakthrough-mask-guidanceSo there is herd immunity , or at least getting vaccinated stops you from going to the hospital.
Wearing masks now is about protecting the maskless and the unvaccinated in Provincetown.
