描述2021年加拿大COVID-19学校和托儿所爆发情况:2021年加拿大COVID-19学校和托儿所爆发情况:一项监测研究
Kaitlin Patterson1, Erin McGill1, Demy Dam1
1Centre for Emerging and Respiratory Infections and Pandemic Preparedness, Public Health Agency of Canada, Ottawa, Ontario, Canada.
BMJ public health
|February 28, 2025
概括
2021年加拿大学校和儿童保育中心的COVID-19疫情风险低,住院或死亡人数最小. 监测数据显示,每次爆发的病例很少,与社区传播率没有联系.
科学领域:
- 公共卫生监督 公共卫生监督
- 流行病学 流行病学
- 传染病控制和控制传染病
背景情况:
- 加拿大公共卫生署于2021年1月建立了加拿大COVID-19疫情监测系统,以监测各种环境中的疾病爆发.
- 学校和托儿所是优先考虑的,因为儿童在呼吸系统疾病传播中的作用很大.
研究的目的:
- 分析2021年1月至12月在加拿大学校和托儿所的COVID-19疫情趋势.
- 评估公共卫生措施对这些环境中的疫情动态的影响.
主要方法:
- 利用了来自加拿大五个司法管辖区的疫情数据,覆盖了76%的人口.
- 生成流行病学曲线,分析病例的年龄分布,并计算疫情规模.
主要成果:
- 小学占了大部分的疫情 (42%).
- 严重程度较低:0.40%的爆发病例被住院治疗,<0.01%的病例死亡.
- 大多数爆发都涉及不到10例;中学爆发和12岁以上的病例在2021年秋季下降.
结论:
- 在学校/托儿所爆发和社区发病率之间没有发现任何关联.
- 虽然儿童是SARS-CoV-2感兴趣的人群,但2021年儿童的严重程度仍然很低.
- 在研究期间,加拿大学校的COVID-19传播风险被确定为低.
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