Keep pumping people with the vaccines even though they apparently are losing efficacy within a short period of time. How many jabs is it going to take for people to seriously consider herd immunity?
Pfizer says immunity drops to 83% within four months in people who got its COVID-19 shot, further bolstering the company case for a booster The effectiveness of Pfizer’s COVID-19 shot can drop to 83.7% within four to six months after getting the second dose of its vaccine. This is the latest indication that vaccine-induced immunity to the virus can wane and some kind of boost may be necessary in the future.
New research published Wednesday as a preprint indicates that the Pfizer Inc. PFE, -0.63% shot provides 96.2% protection for the first two months, 90.1% effectiveness between the second and fourth months, and between 83.7% of protection for the fourth, fifth, and six months.
“We will need a booster eight to 12 months from the second dose,” Pfizer CEO Albert Bourla said Wednesday, according to a FactSet transcript of the company’s second-quarter earnings call.
The drug maker has been making the case for booster shots, citing limited data from its own clinical research and real-world data out of Israel, where Pfizer’s vaccine is the predominant shot in circulation.
“We do see—after six to eight months—more rapid waning concerning infections and mild to moderate symptoms,” Dr. Mikhail Dolsten, Pfizer’s chief scientific officer, said during the call. “Those are likely entirely, or to a large degree, dependent on antibodies and the drop in titer that we alluded to. If you raise it, you may have a good probability to reverse that waning.”
Still, there’s no simple black-and-white answer to whether booster shots are needed at this time.
One, there is no definitive data. The new Pfizer data is the most detailed so far, though the company plans to submit clinical data for a third dose to the Food and Drug Administration in early August. ..................
https://www.marketwatch.com/story/pfizer-says-immunity-drops-to-83-within-six-months-in-people-who-got-its-covid-19-shot-further-bolstering-the-company-case-for-a-booster-11627579817?mod=home-page 
