Published on in Vol 8, No 11 (2020): November
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/23194, first published
.
![COVID-19 Contact Tracing Apps: A Technologic Tower of Babel and the Gap for International Pandemic Control COVID-19 Contact Tracing Apps: A Technologic Tower of Babel and the Gap for International Pandemic Control](https://asset.jmir.pub/assets/6986ffe338febb815f70f74a510e8c7e.png 480w,https://asset.jmir.pub/assets/6986ffe338febb815f70f74a510e8c7e.png 960w,https://asset.jmir.pub/assets/6986ffe338febb815f70f74a510e8c7e.png 1920w,https://asset.jmir.pub/assets/6986ffe338febb815f70f74a510e8c7e.png 2500w)
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