The First Affiliated Hospital of Jinan University, Guangzhou, China.
Guangdong Provincial Institute of Public Health, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou, China.
Sci Rep. 2020 Apr 15;10(1):6119. doi: 10.1038/s41598-020-63383-z.
The social contact patterns associated with the infectious disease transmitted by airborne droplets or close contact follow specific rules. Understanding these processes can improve the accuracy of disease transmission models, permitting their integration into model simulations. In this study, we performed a large-scale population-based survey to collect social contact patterns in three cities on the Pearl River Delta of China in winter and summer. A total of 5,818 participants were face-to-face interviewed and 35,542 contacts were recorded. The average number of contacts per person each day was 16.7 considering supplementary professional contacts (SPCs). Contacts that occurred on a daily basis, lasted more than 4 hours, and took place in households were more likely to involve physical contact. The seasonal characteristics of social contact were heterogeneous, such that contact in the winter was more likely to involve physical contact compared to summer months. The spatial characteristics of the contacts were similar. Social mixing patterns differed according to age, but all ages maintained regular contact with their peers. Taken together, these findings describe the spatiotemporal distribution of social contact patterns relevant to infections in the Guangdong Province of China. This information provides important parameters for mathematical models of infectious diseases.
与空气飞沫或密切接触传播的传染病相关的社会接触模式遵循特定的规则。了解这些过程可以提高疾病传播模型的准确性，使其能够纳入模型模拟中。在这项研究中，我们在冬季和夏季对中国珠江三角洲的三个城市进行了大规模的基于人群的调查，以收集社会接触模式。共有 5818 名参与者接受了面对面访谈，记录了 35542 次接触。考虑到补充职业接触（SPC），每人每天的平均接触人数为 16.7。每天发生、持续超过 4 小时且发生在家庭中的接触更有可能涉及身体接触。社会接触的季节性特征存在差异，冬季的接触比夏季更有可能涉及身体接触。接触的空间特征相似。社会混合模式因年龄而异，但所有年龄段的人都与同龄人保持着定期接触。综上所述，这些发现描述了与中国广东省感染相关的社会接触模式的时空分布。这些信息为传染病的数学模型提供了重要参数。
