Demographic patterns of exposure and transmission for a rural Canadian community outbreak of COVID-19, 2020.

Kaitlin Patterson, Mathieu Chalifoux, Rita Gad, Shannon Leblanc, Paige Paulsen, Louise Boudreau, Theresa Mazerolle, Mariane Pâquet
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引用次数: 0

Abstract

Background: A coronavirus disease 2019 (COVID-19) community outbreak was declared October 5-December 3, 2020, in the Restigouche region of New Brunswick, Canada. This article describes the epidemiological characteristics of the outbreak and assesses factors associated with its transmission in rural communities, informing public health measures and programming.

Methods: A provincial line list was developed from case and contact interviews. Descriptive epidemiological methods were used to characterize the outbreak. Incidence rates among contacts, and by gender for the regional population were estimated.

Results: There were 83 laboratory-confirmed cases of COVID-19 identified during the observation period. The case ages ranged from 10-89 years of age (median age group was 40-59 years of age) and 51.2% of the cases were male. Symptom onset dates ranged from September 27-October 27, 2020, with 83% of cases being symptomatic. A cluster of early cases at a social event led to multiple workplace outbreaks, though the majority of cases were linked to household transmission. Complex and overlapping social networks resulted in multiple exposure events and that obscured transmission pathways. The incidence rate among men was higher than women, men were significantly more likely to have transmission exposure at their workplace than women, and men were the most common index cases within a household. No transmission in school settings among children was documented despite multiple exposures.

Conclusion: This investigation highlighted the gendered nature and complexity of a COVID-19 outbreak in a rural Canadian community. Targeted action at workplaces and strategic messaging towards men are likely required to increase awareness and adherence to public health measures to reduce transmission in these settings.

2020 年加拿大农村社区爆发 COVID-19 的接触和传播人口模式。
背景:2020年10月5日至12月3日,加拿大新不伦瑞克省雷斯蒂古什地区宣布爆发2019年冠状病毒病(COVID-19)社区疫情。本文描述了疫情的流行病学特征,并评估了与疫情在农村社区传播有关的因素,为公共卫生措施和计划的制定提供参考:方法:通过对病例和接触者的访谈,编制了一份省级线性名单。方法:根据对病例和接触者的访谈,编制了一份省级线性名单,并采用描述性流行病学方法来描述疫情特征。结果:共有 83 例实验室确诊病例:观察期间共发现 83 例经实验室确诊的 COVID-19 病例。病例年龄在 10-89 岁之间(中位数为 40-59 岁),51.2% 的病例为男性。发病日期为 2020 年 9 月 27 日至 10 月 27 日,83% 的病例无症状。在一次社交活动中出现的早期病例群导致了多个工作场所的疫情爆发,但大多数病例与家庭传播有关。复杂和重叠的社交网络导致了多重暴露事件,从而模糊了传播途径。男性的发病率高于女性,男性在工作场所接触传播的可能性明显高于女性,男性是家庭中最常见的指数病例。尽管有多次接触,但没有记录表明儿童在学校环境中传播:这项调查凸显了加拿大农村社区 COVID-19 爆发的性别性质和复杂性。可能需要在工作场所采取有针对性的行动,并向男性发出战略性信息,以提高对公共卫生措施的认识和遵守,从而减少这些环境中的传播。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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