A 42-year-old man, with up-to-date COVID-19 vaccination, experienced symptomatic SARS-CoV-2 infection in December 2021. Mutation tests suggested a non-Omicron variant. After his recovery, and 24 days after the first positive SARS-CoV-2 test, he had onset of symptomatic infection with the BA.1.1 (Omicron) variant, which was confirmed by whole-genome sequencing.

中文翻译：

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非 Omicron 感染后 24 天感染 SARS-CoV-2 Omicron 变体，美国宾夕法尼亚州

一名接种了最新 COVID-19 疫苗的 42 岁男子在 2021 年 12 月经历了有症状的 SARS-CoV-2 感染。突变测试表明存在非 Omicron 变体。康复后，在第一次 SARS-CoV-2 检测呈阳性后 24 天，他出现了 BA.1.1 (Omicron) 变体的有症状感染，这已通过全基因组测序得到证实。