Outbreaks of bubonic plague in the U.S. might be linked to climate change in the Pacific Ocean.
Scientists from Norway, The US and Sweden found that the number of infections in the US seemed to shift along with changing climate conditions known as the Pacific Decadal Oscillation (PDO).
The outbreaks seemed to occur during times of warm, wet conditions, authors wrote in the Royal Society journal Biology Letters.
Global warming might mean fewer cases in a hotter, drier North America, but parts of the world expected to see warmer, moister tempertures might not be so lucky.
[Plague tower, Austria by celesteh]