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A Few, as Expected

The US Centers for Disease Control and Prevention has identified a small group of people who contracted COVID-19 after being fully vaccinated, the Wall Street Journal reports.

Experts tell the Journal that such breakthrough cases are to be expected as though the vaccines authorized in the US are highly effective, they are not a guarantee. In testing, Pfizer and BioNTech have reported their vaccine has about a 95 percent efficacy, while Moderna reported one of 94.5 percent and Johnson & Johnson one around 66 percent.

According to the Journal, CDC has identified 5,800 cases in which people were infected with SARS-CoV-2 two weeks or more after their final vaccination, which it says is about 0.008 percent of the vaccinated population.

CNN reports that the breakthrough infections affected a range of individuals, but that about 40 percent of cases were in people 60 years old or old and 65 percent were among women. In addition, 29 percent of cases were asymptomatic, but 7 percent were hospitalized and 74 people died, it adds.

"It is fully expected that some people who are vaccinated against COVID-19 will still get COVID-19," Joseph Wendelken, a spokesperson for Rhode Island's health department, tells the Journal. "The fact that our positivity rate among vaccinated people is so low is a sign of how effective that COVID-19 vaccine is. This is another reason why people should get vaccinated when they are eligible."

The Scan

More Boosters for US

Following US Food and Drug Administration authorization, the Centers for Disease Control and Prevention has endorsed booster doses of the Moderna and Johnson & Johnson SARS-CoV-2 vaccines, the Washington Post writes.

From a Pig

A genetically modified pig kidney was transplanted into a human without triggering an immune response, Reuters reports.

For Privacy's Sake

Wired reports that more US states are passing genetic privacy laws.

Science Paper on How Poaching Drove Evolution in African Elephants

In Science this week: poaching has led to the rapid evolution of tuskless African elephants.