Published March 5, 2020
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https://stars.library.ucf.edu/cgi/viewcontent.cgi?article=1029&context=jicrcr
Timeline...
Corona virus pandemic declared (Mar ‘20)
Nine months later, vax distributed (Dec/Jan ‘21)
Negative effects of vax become seen (Apr/May ‘21)
Five months later max saturation of vax (May/Jun ‘21)
4-5 months later, symptoms of vax become public knowledge (Sep/Oct ‘21)
Five months later, pandemic declared over (Feb/Mar ‘22)