LONDON (AP) — After Dr. Ifeanyi Nsofor and his wife received two doses of AstraZeneca’s coronavirus vaccine in Nigeria, they assumed they would be free to travel this summer to a European destination of their choice. They were wrong.

The couple — and millions of other people vaccinated through a U.N.-backed effort — could find themselves barred from entering many European and other countries because those nations don’t recognize the Indian-made version of the vaccine for travel.

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