Yellow fever may be resurfacing in the United States, thanks to climate change. The mosquito-borne viral illness decimated southern U.S. cities from 1820 to 1905, and now a new report says it could return to those areas. One of the potential reasons for a yellow fever resurgence? Global warming, because mosquitoes love warm, wet weather.…  read on >  read on >

New research has uncovered evidence that remnants of the COVID-19 virus may remain in some patients’ guts for months, contributing to the lingering symptoms known as long COVID. The remnants appear to trigger a drop in levels of the chemical serotonin, which may explain such symptoms as fatigue, brain fog and memory loss. About 20%…  read on >  read on >

Air pollution from heavy traffic may be driving pregnancy complications and health concerns for infants. Researchers who matched more than 60,000 birth records with air-monitoring data found that pregnant patients living in an urban area with elevated levels of nitrogen dioxide had higher rates of preterm birth. This included delivery before 28 weeks, according to…  read on >  read on >