burning building Travelers may not be aware that the original cause of a wildfire can dictate if travel insurance coverage is available. (AP Photo/Noah Berger)

This summer, major wildfires have burned out of control in California and across the western United States, as well as in Germany, Greece, Spain and Sweden.

About 5.4 million acres have been blackened in more than a dozen U.S. states during this year's extremely active wildfire season, according to the National Interagency Fire Center. Summer vacation travelers have likely had their getaway plans disrupted.

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