@Article{info:doi/10.2196/26955,
author="Fraticelli, Laurie
and Freyssenge, Julie
and Claustre, Cl{\'e}ment
and Martinez, Mika{\"e}l
and Redjaline, Abdesslam
and Serre, Patrice
and Bochaton, Thomas
and El Khoury, Carlos",
title="Estimating the Proportion of COVID-19 Contacts Among Households Based on Individuals With Myocardial Infarction History: Cross-sectional Telephone Survey",
journal="JMIR Form Res",
year="2021",
month="Apr",
day="27",
volume="5",
number="4",
pages="e26955",
keywords="COVID-19; survey; myocardial infarction; cases; contacts; household; estimate; cross-sectional; cardiovascular; risk; symptom",
abstract="Background: Adults with cardiovascular diseases were disproportionately associated with an increased risk of a severe form of COVID-19 and all-cause mortality. Objective: The aims of this study are to report the associated symptoms for COVID-19 cases, to estimate the proportion of contacts, and to describe the clinical signs and behaviors among individuals with and without myocardial infarction history among cases and contacts. Methods: A 2-week cross-sectional telephone survey was conducted during the first lockdown period in France, from May 4 to 15, 2020. A total of 668 households participated, representing 703 individuals with pre-existing cardiovascular disease in the past 2 years and 849 individuals without myocardial infarction history. Results: High rates of compliance with health measures were self-reported, regardless of age or risk factors. There were 4 confirmed COVID-19 cases that were registered from 4 different households. Based on deductive assumptions of the 1552 individuals, 9.73{\%} (n=151) were identified as contacts, of whom 71.52{\%} (108/151) were asymptomatic. Among individuals with a myocardial infarction history, 2 were COVID-19 cases, and the estimated proportion of contacts was 8.68{\%} (61/703), of whom 68.85{\%} (42/61) were asymptomatic. The cases and contacts presented different symptoms, with more respiratory signs in those with a myocardial infarction history. Conclusions: The telephone survey could be a relevant tool for reporting the number of contacts during a limited period and in a limited territory based on the presence of associated symptoms and COVID-19 cases in the households. This study advanced our knowledge to better prepare for future crises. ",
issn="2561-326X",
doi="10.2196/26955",
url="https://formative.jmir.org/2021/4/e26955",
url="https://doi.org/10.2196/26955",
url="http://www.ncbi.nlm.nih.gov/pubmed/33855968"
}