The H5N1 case is in a resident of Yakima County, Washington, who was exposed to infected dairy cows.
The Kremlin said media outlets were lying about a potential pneumonic plague exposure and infection.
Russia has yet to confirm what caused the lab worker’s death.
A 2025 death caused by pneumonic plague is Arizona’s first since 2007.
The 7,870 cholera deaths reported in 2025 represent the most since 1999.
Historical records describe a disease pattern that challenges longstanding narratives about plague epidemiology in Western Europe.
The findings in hunter-gatherers challenge the theory that plague coincided with the rise of agriculture.
The report was to be published on March 19, and showed people who had received an updated seasonal COVID vaccine reduced their likelihood of ED and urgent care visits by 50%.
The H5N1 finding in Wisconsin is part of a recent rise in poultry outbreaks in a handful of Midwestern states.
Health officials say he might have been exposed to Yersinia pestis while camping in Rio Arriba County in northern New Mexico.