CDC V-Safe after vaccination health checker  

(click graphic to open the CDC v-safe website in a new tab)

V-safe is a smartphone-based tool that checks in on you after your COVID-19 vaccination. Your participation helps keep COVID-19 vaccines safe — for you and for everyone. If you got vaccinated in the last 6 weeks, you can participate in v-safe! It takes just a few minutes to register and get started. All you need is your smartphone and information about the COVID-19 vaccine you received. This information can be found on your vaccination record card. If you cannot find your card, please contact your healthcare provider.