Fig. 1

Depiction of the sequence of the survey dates. After vaccination against SARS-CoV-2 or against one of the comparators, participants received an invitation to the short-term survey at 14 days latency, and an invitation to the long-term survey after a further 26 days. One hundred twenty-four days after vaccination, all participants received an invitation to the follow-up survey. Surveys included in the analysis are highlighted in blue, while those excluded from the analysis are highlighted in grey