Utah man dies of bubonic plague in fourth US death this year

Fourth fatality out of 12 cases adds up to highest death rate in 15 years, but health authorities say risk remains very small overall

Related: California child diagnosed with plague after camping at Yosemite

A man in his 70s in Utah has died after contracting the plague, bringing to four the number of deaths from the disease reported in the United States this year, health officials have said.