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10 facts about Americans and coronavirus vaccines | Pew Research Center
Information for Persons Who Are Immunocompromised Regarding Prevention and Treatment of SARS-CoV-2 Infection in the Context of Currently Circulating Omicron Sublineages — United States, January 2023 | MMWR
Coronavirus: Covid Updates: F.D.A. Authorizes Moderna and J.&J. Boosters and Mix-and-Match Strategy - The New York Times
Proof of vaccination - Province of British Columbia
What is a booster shot and why do I need it? | OSF HealthCare
Vaccine, booster and travel guidance for people vaccinated against COVID-19 outside of the United States : Oregon Health News Blog
Should I get a COVID-19 booster? | Science | AAAS
COVID entry requirements: Countries ask travelers to get boosted
These Countries Require a COVID-19 Booster Shot for Entry
Effectiveness of Bivalent mRNA Vaccines in Preventing Symptomatic SARS-CoV-2 Infection — Increasing Community Access to Testing Program, United States, September–November 2022 | MMWR
COVID-19 Vaccine: Guidelines, Schedule & Efficacy
Majority in U.S. Says Public Health Benefits of COVID-19 Restrictions Worth the Costs, Even as Large Shares Also See Downsides | Pew Research Center
Covid-19 Vaccinations: County and State Tracker - The New York Times
US to lift most federal COVID-19 vaccine mandates next week | AP News
How much freedom do you get after a COVID vaccine booster? : Goats and Soda : NPR
New COVID boosters likely to protect against worrisome variant : Shots - Health News : NPR
Covid Vaccine Card: What You Need to Know - The New York Times
U.S. officials say vaccinated don't need booster right now | Reuters
Influenza and COVID-19 Vaccination Coverage Among Health Care Personnel — United States, 2021–22 | MMWR
Coronavirus: Covid News: Mayor Fights Chicago's Largest Police Union Over Vaccinations - The New York Times