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Photo: Justin Tallis/AFP via Getty Images

Moderna's COVID-19 vaccine is effective against new variants of the virus that first appeared in the U.K. and in South Africa, the company announced on Monday.

Yes, but: The vaccine was as effective against the strain from U.K., but saw a six-fold reduction in antibodies against the South Africa variant. Even still, the neutralizing antibodies generated by the vaccine "remain above levels that are expected to be protective," according to the company.

What to watch: Moderna now says it is developing an additional booster dose against the South Africa strain, and another booster to fight other emerging strains. The results of Moderna's tests have not yet been peer-reviewed.

Go deeper: What you need to know about the new coronavirus variants

Go deeper

Sep 29, 2021 - Health

CDC issues urgent advisory calling on pregnant people to get COVID vaccine

Photo: Ben Hasty/MediaNews Group/Reading Eagle via Getty Images

The CDC issued "an urgent health advisory" on Wednesday urging people who are pregnant or planning to become pregnant to get the COVID-19 vaccine.

Why it matters: The CDC said it "strongly recommends" vaccination because its benefits for a pregnant person and the fetus outweigh the risks. It added that pregnant people with COVID-19 are at "increased risk" of outcomes such as preterm birth, stillbirth and admission of a newborn into the ICU.

AT&T mandates COVID vaccination for most unionized workers

Photo: Ronald Martinez/Getty Images

AT&T expanded its COVID-19 vaccine mandate Wednesday to employees who are members of the Communications Workers of America (CWA) union.

Why it matters: The communications giant is one of the biggest employers in the U.S. to require frontline workers to be vaccinated against the virus. The union said it represents some 90,000 AT&T workers, per AP.

Updated 4 hours ago - Sports

The potential GOAT of chess faces intriguing challenger

Illustration: Sarah Grillo/Axios

The World Chess Championship between Norway's Magnus Carlsen and Russia's Ian Nepomniachtchi began on Friday, 1,094 days after Carlsen won his fourth consecutive title.

Why it matters: During the long, COVID-fueled layoff, chess entered a new era, and with the championship finally here, the age-old game is ready for its close-up.