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Does testing provide protection?

Does testing provide protection?

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Testing can help catch coronavirus infections before travel, Wu said,"but testing is not foolproof."

"It can be falsely negative, or just miss infections you are still incubating," he said. "You could certainly also get infected during travel and potentially infect others after that."

Testing can offer "a level of reassurance if the people who are attending are negative at the time they were tested," Schaffner said. "You still have to be cautious."

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