There are no federal / national standards in the United States of America (USA) currently. However, the SMART Health Card (“SHC”) standard has gained relative popularity across the USA (and worldwide).
Currently, these are the list of countries / states / provinces that have adopted the SHC standards:
US States: Hawaii, New York, Louisiana, Virginia, California (more States soon)
Canadian Provinces: Quebec, British Columbia, Ontario, Alberta, Saskatchewan (more Provinces soon)
Others: North Macedonia, Aruba, Cayman Islands
For an updated list, please visit https://www.lfph.io/2021/10/14/smart-health-cards/
Last updated: 2 November 2021