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(CNN) — The 2021 summer travel season started out full of hope and promise, but by the day, two words are threatening to dismantle it all.
Delta variant.
This more transmissible variation of the coronavirus was first detected in India in February, just when the United States and some other places around the world were starting to really gear up their vaccination efforts. It turned out to be a race against time: vaccines vs. Delta. And just like all other waves of the pandemic, travel feels the Covid impact quick and hard.
From new travel advisories issued this week to Google searches on the topic in the past 24 hours, it’s clear the Delta variant is causing increasing worry and disruptions for governments and would-be travelers.
New US travel advisories
The Alfama district can be seen in Lisbon. The US moved Portugal to a “Level 4: Do not travel” advisory on Monday.
Patricia de Melo Moreira/AFP via Getty Images
On Monday, the US State Department and Centers for Disease Control and…
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