Objectives We aim to identify the factors associated with support and compliance with general quarantine and with the acceptability and potential use of a contact-tracing mobile phone application among French respondents. Study design We conducted a cross-sectional study between April 16th and May 7th 2020 using online questionnaires. Methods The sample was reweighted to be representative of the French population by age and sex, region and education level. Ordered logistic, logistic and negative binomial regressions were used to estimate the factors associated with quarantine support, with the opinion on quarantine extension, with the number and type of trips outside the quarantine home and with the acceptability and potential use of a contact-tracing application. Results After reweighting, full data for regression analyses were available for 1849 respondents. Attitudes and opinions regarding quarantine are correlated with the perceived COVID-19 threat, the perceived benefits of quarantine, trust in the government, well-being during quarantine and risk preferences. Trust in the government, perceived individual health consequences in case of COVID-19 infection and time preferences are associated with the willingness to use a contact-tracing application. Conclusions Our analysis indicates that prevention campaigns that stress the individual risk in case of infection or the benefits of quarantine could foster compliance to quarantine protocols. Remote psychological support might also promote quarantine adherence among individuals most distressed by the quarantine. Moreover, public communications should focus on restoring trust among the population as trust is strongly correlated with the willingness to use a contact-tracing application.

Objectives The objective of the study is to investigate the factors associated with COVID-19 vaccination intentions and attitudes in France. Study design An online cross-sectional study was conducted among a representative sample of the French population between November 20th and 23rd 2020 (N = 1146). Methods Factors associated with the intention to get vaccinated and with COVID-19 vaccine attitudes were estimated using ordered logistic and multinomial logistic regressions, respectively. Independent variables of interest include COVID-19 and vaccine perceptions, trust, endorsement of COVID-19 conspiracy theories and time/risk preferences. Results Only 30.5% of our respondents would agree to get vaccinated against COVID-19 during the first semester of 2021 while 31.1% declare being unsure of their vaccination intentions. COVID-19 risk perceptions are associated with vaccination intentions and attitudes. Individual and collective benefits of the vaccine and the concerns over its safety are strongly associated with COVID-19 vaccination intentions and attitudes. Vaccine acceptors are more willing to take risks in the health domain compared with vaccine hesitant respondents which indicates that the COVID-19 vaccine is perceived as a greater health risk than the COVID-19 itself by some respondents. We also find a positive association between future preference and the willingness to get vaccinated. Conclusion Awareness campaigns should be conducted to enhance vaccination uptake among vaccine hesitant individuals. These campaigns could highlight the positive benefit-risk balance of the COVID-19 vaccines or the short-term benefits of vaccination and should reinsure the public on the safety of the COVID-19 vaccines.

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Le développement d’Internet et des réseaux sociaux a facilité la diffusion de l’information, mais il a également contribué à la polarisation des communautés en ligne, favorisant ainsi la propagation des théories complotistes. La crise de la Covid-19 a en particulier conduit à une « infodémie », c’est-à-dire à une surabondance d’informations rendant difficile l’identification des informations fiables, la circulation de fausses informations ayant parfois des conséquences sanitaires dramatiques. Plusieurs études ont mis en avant une association négative entre croyances conspirationnistes et adhésion aux mesures de protection adoptées face à la Covid-19. La lutte contre la mésinformation apparaît donc cruciale, en particulier en période de pandémie. Elle nécessite que le régulateur public travaille en collaboration avec les plateformes digitales et les médias sociaux, au vu des enjeux financiers pour ces derniers, afin de trouver des solutions pérennes pour limiter la circulation des fausses informations.

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