CDC COVID-19 Response Team.
MMWR Morb Mortal Wkly Rep. 2020 Oct 16;69(41):1494-1496. doi: 10.15585/mmwr.mm6941e1.
CDC works with other federal agencies to identify counties with increasing coronavirus disease 2019 (COVID-19) incidence (hotspots) and offers support to state, tribal, local, and territorial health departments to limit the spread of SARS-CoV-2, the virus that causes COVID-19 (1). Understanding whether increasing incidence in hotspot counties is predominantly occurring in specific age groups is important for identifying opportunities to prevent or reduce transmission. The percentage of positive SARS-CoV-2 reverse transcription-polymerase chain reaction (RT-PCR) test results (percent positivity) is an important indicator of community transmission.* CDC analyzed temporal trends in percent positivity by age group in COVID-19 hotspot counties before and after their identification as hotspots. Among 767 hotspot counties identified during June and July 2020, early increases in the percent positivity among persons aged ≤24 years were followed by several weeks of increasing percent positivity in persons aged ≥25 years. Addressing transmission among young adults is an urgent public health priority.
疾控中心与其他联邦机构合作，确定新冠病毒疾病 2019（COVID-19）发病率（热点地区）不断上升的县，并为州、部落、地方和地区卫生部门提供支持，以限制 SARS-CoV-2 的传播，这种病毒导致 COVID-19（1）。了解热点县发病率的增加是否主要发生在特定年龄组，对于确定预防或减少传播的机会非常重要。SARS-CoV-2 逆转录-聚合酶链反应（RT-PCR）检测结果的阳性百分比（阳性百分比）是社区传播的重要指标*。疾控中心分析了 2020 年 6 月至 7 月期间 COVID-19 热点县被确定为热点前后按年龄组划分的阳性百分比的时间趋势。在确定的 767 个热点县中，≤24 岁人群的阳性百分比早期增加，随后≥25 岁人群的阳性百分比增加数周。解决青年成年人之间的传播是一个紧迫的公共卫生优先事项。
