Why can’t some COVID-19 vaccinated people travel to the US?

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'Fully Vaccinated' , May Now Refer to, 3 COVID-19 Shots.CNN reports that you may need more than two doses of a COVID-19 vaccine to be considered fully vaccinated.Decreasing vaccine immunity and rising infections related to the Delta variant have caused wealthy nations of the world to reconsider what 'fully vaccinated' means.Boris Johnson, Prime Minister of the United Kingdom says booster shots were key in preventing pandemic protocols from being implemented again.It's very clear that getting three jabs -- getting your booster -- will become an important fact and it will make life easier for you in all sorts of ways. , Boris Johnson, U.K. Prime Minister, via CNN.It's very clear that getting three jabs -- getting your booster -- will become an important fact and it will make life easier for you in all sorts of ways. , Boris Johnson, U.K. Prime Minister, via CNN.Many nations are now moving toward putting booster mandates into effect.In France, President Emmanuel Macron announced that by December 15, any French citizen over 65 will need a booster shot to validate the country's vaccination pass.In France, President Emmanuel Macron announced that by December 15, any French citizen over 65 will need a booster shot to validate the country's vaccination pass.Health experts fear these first-world economies' reliance on booster shots will negatively affect the supply of initial vaccine doses for low-income nations.Health experts fear these first-world economies' reliance on booster shots will negatively affect the supply of initial vaccine doses for low-income nations.If we look at low-income countries as a whole, less than 1% of the total vaccine supply has been delivered to those poorest countries, many of which are in Africa. , Anna Marriot, health policy adviser at Oxfam, via CNN.At this point, six times more booster shots are being administered in the world than primary doses of the vaccine.At this point, six times more booster shots are being administered in the world than primary doses of the vaccine.It makes no sense to give boosters to healthy adults, or to vaccinate children, when health workers, older people and other high-risk groups around the world are still waiting for their first dose. , Tedros Adhanom Ghebreyesus, Director-General of the World Health Organization, via CNN

The United States opened its borders to people fully vaccinated against COVID-19, but some who got the shots are finding they’re still not eligible to visit

Why can’t some COVID-19 vaccinated people travel to the U.S.?

Because they might not be vaccinated with shots recognized by the U.S. Food and Drug Administration or the World Health Organization.

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When lifting overseas travel restrictions in November, the U.S. required adults coming to the country to be fully vaccinated with shots approved or authorized by the FDA or allowed by WHO.

Among the most widely used vaccines that don't meet that criteria are Russia's Sputnik V vaccine and China's CanSino vaccine. Sputnik V is authorized for use in more than 70 countries while CanSino is allowed in at least nine countries. WHO still is awaiting more data about both vaccines before making a decision.

Vaccines recognized by the FDA and WHO undergo rigorous testing and review to determine they're safe and effective. And among the vaccines used internationally, experts say some likely won’t be recognized by the agencies.

“They will not all be evaluated in clinical trials with the necessary rigor,” said Dr. William Moss, executive director of the Johns Hopkins International Vaccine Access Center.

An exception to the U.S. rule is people who received a full series of the Novavax vaccine in a late-stage study. The U.S. is accepting the participants who received the vaccine, not a placebo, because it was a rigorous study with oversight from an independent monitoring board.

The U.S. also allows entry to people who got two doses of any “mix-and-match” combination of vaccines on the FDA and WHO lists.

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