You may find your answer if you accept our invitation to read about the history of QUARANTINE on the US Centers for Disease Control and Prevention (CDC) website here👇
🌐 https://www.cdc.gov/quarantine/historyquarantine.html

If you want to know how the post relates to its image, we invite you to read this short Wikipedia article here 👇
🌐 https://en.wikipedia.org/wiki/Yellow_flag_(contagion)

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