The 4 kidnapped Americans are part of a large wave of U.S. medical tourism in Mexico

Medical tourism numbers are on the rise in Mexico, after the practice was curtailed by COVID-19 restrictions. Here, foreign patients are seen at the hospital Oasis of Hope in Tijuana in, 2019, in Mexico

Before the pandemic halted travel, some 1.2 million American citizens visited Mexico for health care. The number is rising quickly again, with border restrictions eased.

(Image credit: Guillermo Arias/AFP via Getty Images)

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Bill Chappell