💉@COVID19Up: Independent journalist Kim Iverson reviews a new report from the Mayo Clinic showing that Pfizer’s mRNA COVID-19 vaccine is only 42% effective against infection from the Delta variant of SARS-CoV-2. Moderna’s mRNA COVID-19 vaccine came in at 76% effective against Delta infection.

This is just the latest data showing that protection against SARS-CoV-2 infection from COVID-19 vaccination wears of. Because of this, U.S. President Joe Biden is expected to make an announcement this week that there will be a COVID-19 booster shot available as early as next month recommended for all Americans.

What about COVID-19 hospitalizations? Unfortunately, protection from Pfizer’s COVID-19 vaccine against severe infection also appears to be weakening. Recent Israeli data shows that of August 15, more than 514 Israelis were hospitalized with severe COVID-19, an increase of 31% from just 4 days earlier.

Of those 514 hospitalized COVID-19 patients, 59% were fully vaccinated.

“There are so many breakthrough infections that they dominate and most of the hospitalized patients are actually vaccinated,” says Uri Shalit, a bioinformatician at the Israel Institute of Technology. “One of the big stories from Israel [is]: ‘Vaccines work, but not well enough.’”

This article is free and open source. You have permission to republish it under a Creative Commons license with attribution to COVID19Up.org.

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