The real world. Fake, substandard vaccines and
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Fake, substandard vaccines and medicines spell trouble for controlling Covid-19
https://www.statnews.com/2021/10/25/counterfe...-covid-19/
Beware of Fraudulent Coronavirus Tests, Vaccines and Treatments
https://www.fda.gov/consumers/consumer-update...treatments
Fake Vaccine Cards May Become Employers’ Next New Headache: 5 Steps to Protect Your Company
https://www.fisherphillips.com/news-insights/...dache.html
Two possible real world solutions
QMC's Vac-chek
and
QMC's quantum dot tags and blockchain anti-counterfeiting technology.