The United States will accept the use by international visitors of Covid-19 vaccines authorized by US regulators or the World Health Organization, the Centers for Disease Control and Prevention said late on Friday. On Sept. 20, the White House announced the United States in November would lift travel restrictions on air travelers from 33 countries including China, India, Brazil and most of Europe who are fully vaccinated against Covid-19. It did not specify then which vaccines would be accepted. A CDC spokeswoman told Reuters Friday, “Six vaccines that are FDA authorized/approved or listed for emergency use by WHO will meet the criteria for travel to the US.” The United States will admit fully vaccinated air travelers from the 26 so-called Schengen countries in Europe as well as Britain, Ireland, China, India, South Africa, Iran and Brazil. The new Covid-19 vaccine requirements will now apply to nearly all foreign nationals flying to the United States - including those not subject to the prior restrictions.