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There's a lot of debate about vaccine passports right now. What are they, and how would they work?
By Theresa Waldrop
Vaccine Passports Prolong Lockdowns - WSJ
By Martin Kulldorff & Jay Bhattacharya
Walgreens Not Following C.D.C. Guidance on Second Pfizer Vaccine Doses
By Rebecca Robbins
U.S. begins study assessing allergic reactions to Pfizer and Moderna Covid vaccines
By Berkeley Lovelace & Berkeley Lovelace Jr.