Emerg Infect Dis. 2023 Aug;29(8):1672-1675. doi: 10.3201/eid2908.230471.
We estimated SARS-CoV-2 seroprevalence in children in Oregon, USA, at 6 time points. Seroprevalence increased linearly during November 2020-December 2021 and peaked in February 2022 at 38.8% (95% CI 32.8%-46.5%). We observed no increase in the seroprevalence trend after widespread school reopening. Seroprevalence estimates complement case-based cumulative incidence.
我们在美国俄勒冈州的 6 个时间点估计了 SARS-CoV-2 的血清流行率。2020 年 11 月至 2021 年 12 月期间,血清流行率呈线性增长,并在 2022 年 2 月达到峰值,为 38.8%(95%CI 32.8%-46.5%)。我们没有发现学校广泛重新开放后血清流行率趋势有所增加。血清流行率估计补充了基于病例的累积发病率。