Fig. 6: Association of red alerts with COVID-19 vaccination.
From: Real-time alerting system for COVID-19 and other stress events using wearable data
a, Examples of the association of COVID-19 vaccination with alerts from the online NightSignal algorithm. b, Effects of COVID-19 vaccination on average RHR overnight in the cases of (from left to right) the first dose of the Moderna vaccine, the first dose of the Pfizer-BioNTech vaccine, the second dose of the Moderna vaccine and the second dose of the Pfizer-BioNTech vaccine. c, Distribution of symptoms reported and alerts received for 1 week after the first and second doses of the Pfizer-BioNTech and Moderna vaccines.
