To determine changes in Bordetella pertussis and B. parapertussis detection rates, we analyzed 1.43 million respiratory multiplex PCR test results from US facilities from 2019 through mid-2023. From mid-2022 through mid-2023, Bordetella spp. detection increased 8.5-fold; 95% of detections were B. parapertussis. While B. parapertussis rates increased, B. pertussis rates decreased.

中文翻译：

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副百日咳博德特氏菌重新出现，美国，2019–2023 年

为了确定百日咳博德特氏菌和副百日咳博德特氏菌检出率的变化，我们分析了 2019 年至 2023 年中期美国机构的 143 万份呼吸道多重 PCR 检测结果。从 2022 年中期到 2023 年中期，博德特氏菌 (Bordetella spp.)。检测率提高8.5倍； 95% 的检测结果为副百日咳杆菌。虽然副百日咳博德特氏菌发病率上升，但百日咳博德特氏菌发病率却下降。