Slovakia
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Photo: View of the Bratislava castle, main square and the St. Martin's Cathedral. (photo via sorincolac / iStock / Getty Images Plus)
The State Department is advising Americans to exercise normal precautions in Slovakia as of July 19. The country has also received a Level 1 Travel Health Notice from the CDC, reporting just over 600 cases between July 19 and August 1. According to the U.S. Embassy in Slovakia, travel for tourism from the United States is permitted as long as the traveler has already legally entered the Schengen zone, including as a tourist through the airport in Vienna, Austria.