You’re not going to get vaccine-induced herd immunity from a vaccine that doesn’t work. From Megan Redshaw at childrenshealthdefense.org:
A paper published Sept. 30, in Eurosurveillance showed COVID spread rapidly by a fully vaccinated patient to fully vaccinated staff, patients and family members — despite a 96% vaccination rate and use of full personal protective equipment. Five patients died and nine had severe cases.
The study cites a COVID outbreak which spread rapidly among hospital staff at an Israeli Medical Center — despite a 96% vaccination rate, use of N-95 surgical masks by patients and full personal protective equipment worn by providers.
The calculated rate of infection among all exposed patients and staff was 10.6% (16/151) for staff and 23.7% (23/97) for patients, in a population with a 96.2% vaccination rate (238 vaccinated/248 exposed individuals).
The paper noted several transmissions likely occurred between two individuals both wearing surgical masks, and in one instance using full PPE, including N-95 mask, face shield, gown and gloves.
Of the 42 cases diagnosed in the outbreak, 38 were fully vaccinated with two doses of Pfizer and BioNTech’s Comirnaty vaccine, one had received only one vaccination and three were unvaccinated.
Of the infected, 23 were patients and 19 were staff members. The staff all recovered quickly. However, eight vaccinated patients became severely ill, six became critically ill and five of the critically ill died. The two unvaccinated patients tracked had mild COVID cases.