Centers for Disease Control (CDC)
The CDC works 24/7 to protect America from health, safety and security threats, both foreign and in the U.S. Whether diseases start at home or abroad, are chronic or acute, curable or preventable, human error or deliberate attack, CDC fights disease and supports communities and citizens to do the same.
https://www.cdc.gov/V-Safe After Vaccination Health Checker
Welcome to the Digital COVID-19 Vaccine Record portal. Just enter a few details below to get a link to a QR code and digital copy of your COVID-19 vaccination record. If you want to share your proof of vaccination, you can use either the electronic version you’ll get from the portal or the card you were given at time of vaccination.
https://vsafe.cdc.gov/en/World Health Organization
WHO works worldwide to promote health, keep the world safe, and serve the vulnerable. Our goal is to ensure that a billion more people have universal health coverage, to protect a billion more people from health emergencies, and provide a further billion people with better health and well-being.
https://www.cdc.gov/