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11 hours ago — Jan. 27 – Feb. 3, 2022. This photo gallery highlights some of the most compelling images made or published by Associated Press photographers ..
SARS-CoV-2 seems to be constantly changing. In the span of just two years, alpha, beta, delta, lambda, mu and omicron have all made headlines. And that list doesn't include dozens of other variants that were detected but not considered high priority by the World Health Organization.