All Sauce from Weekly Sauce:

More people around the world are exposed to wildfire smoke that has the potential to harm human health, and their numbers are growing, new research finds. More than 2 billion people are exposed to at least one day of potentially health-impacting wildfire smoke each year, a figure that has grown by almost 7% in the…  read on >  read on >

Substance abuse and pregnancy may be a dangerous combination. New research finds that pregnant women with a history of substance abuse had a dramatically increased risk of death from heart attack and stroke during childbirth compared to women with no drug history. “This telling research shows that substance use during pregnancy doubled cardiovascular events and…  read on >  read on >

Brown rats found and analyzed near Atlanta now carry rat lungworm, researchers report. It’s a parasite that can trigger a dangerous brain encephalitis in both people and pets, and which now threatens a wide area of the U.S. Southeast. Researchers in Georgia say the microscopic rat lungworm, known scientifically as Angiostrongylus cantonensis, typically begins its…  read on >  read on >

A deadly infection associated with hospitalization may not be the fault of the hospital, but may instead stem from the patients themselves, a new study suggests. Infection caused by the bacterium Clostridioides difficile, or C. diff, is still common in hospitals, despite extensive infection control procedures. The new research may help explain why that’s so.…  read on >  read on >