%0 Journal Article
%@ 2561-326X
%I JMIR Publications
%V 5
%N 4
%P e26955
%T Estimating the Proportion of COVID-19 Contacts Among Households Based on Individuals With Myocardial Infarction History: Cross-sectional Telephone Survey
%A Fraticelli,Laurie
%A Freyssenge,Julie
%A Claustre,Clément
%A Martinez,Mikaël
%A Redjaline,Abdesslam
%A Serre,Patrice
%A Bochaton,Thomas
%A El Khoury,Carlos
%+ RESCUe-RESUVal, Lucien Hussel Hospital, Montée du Docteur Maurice Chapuis, Vienne, 38200, France, 33 4 37 02 10 59, l.fraticelli@resuval.fr
%K COVID-19
%K survey
%K myocardial infarction
%K cases
%K contacts
%K household
%K estimate
%K cross-sectional
%K cardiovascular
%K risk
%K symptom
%D 2021
%7 27.4.2021
%9 Original Paper
%J JMIR Form Res
%G English
%X 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. 
%M 33855968
%R 10.2196/26955
%U https://formative.jmir.org/2021/4/e26955
%U https://doi.org/10.2196/26955
%U http://www.ncbi.nlm.nih.gov/pubmed/33855968