Emerging Infectious Diseases ( IF 7.2 ) Pub Date : 2024-12-10 , DOI: 10.3201/eid3101.240737 Vasiliki Engeli, Sotirios Roussos, Nikolaos Demiris, Angelos Hatzakis, Vana Sypsa
We collected social contact data in Greece to measure contact patterns before (January 2020) and during the COVID-19 pandemic (March 2020–October 2021) and assess the effects of social distancing over time. During lockdowns, mean daily contacts decreased to 2.8–5.9 (mean prepandemic 20.4). Persons >65 years of age retained the fewest contacts during the pandemic (2.1–4.1). Compared with the first lockdown (March–April 2020), the second lockdown (November–December 2020) and third lockdown (April 2021) showed higher numbers of contacts (incidence rate ratio 1.50 [95% CI 1.27–1.76] in second lockdown and 2.19 [95% CI 1.86–2.58] in third lockdown). In 2021, an increase in contacts was apparent, which persisted during the April 2021 lockdown among persons 18–64 years of age. Our study provides evidence of the waning observance of physical distancing. Effective risk communication alongside targeted social distancing could offer alternatives to repeated lockdowns.
中文翻译:
COVID-19 大流行前后的社交接触模式和年龄混合,希腊,2020 年 1 月至 2021 年 10 月
我们收集了希腊的社交联系数据,以衡量 COVID-19 大流行之前(2020 年 1 月)和期间(2020 年 3 月至 2021 年 10 月)的接触模式,并评估社交距离随时间推移的影响。在封锁期间,平均每日接触人数下降到 2.8-5.9 次(大流行前平均 20.4 次)。在大流行期间,65 岁的人 >保持的接触最少 (2.1-4.1)。与第一次封锁(2020 年 3 月至 4 月)相比,第二次封锁(2020 年 11 月至 12 月)和第三次封锁(2021 年 4 月)的接触者数量更高(第二次封锁的发病率比为 1.50 [95% CI 1.27-1.76],第三次封锁为 2.19 [95% CI 1.86-2.58])。2021 年,接触者明显增加,在 2021 年 4 月封锁期间,18-64 岁的人群持续存在。我们的研究提供了对身体距离的遵守减少的证据。有效的风险沟通以及有针对性的社交距离可以为反复封锁提供替代方案。