All Sauce from Weekly Sauce:

One-third of the U.S. population — about 103 million people — had been infected by the SARS-CoV-2 virus by the end of 2020, but more than three-quarters of the cases weren’t officially confirmed, according to a Columbia University study. “It is these undocumented cases, which are often mild or asymptomatic infectious, that allow the virus…  read on >  read on >

Do you have an implanted defibrillator or pacemaker? Try keeping your smart watch or smart phone a few inches away from them. New research from the U.S. Food and Drug Administration finds that your phone or watch could interfere with implanted heart devices. Based on the new findings, heart patients and health care providers should…  read on >  read on >

More than 171 million people are fully vaccinated against COVID-19 in the United States, but the highly infectious Delta variant has left some with “breakthrough” cases nonetheless. These cases were anticipated, because the COVID vaccines weren’t designed to eliminate all virus infections, but rather to lower a person’s risk of severe illness and hospitalization. Even…  read on >  read on >

Coronavirus cases and deaths in Florida are at record highs as the Delta variant ravages the state and Republican Gov. Ron DeSantis holds firm on forbidding vaccine and mask mandates. As of Tuesday, Florida had reported a record average of 227 COVID-19 deaths a day this week, and the average number of new known cases…  read on >  read on >

The search for the source of the new coronavirus is at an impasse and the window of opportunity to identify the virus’ origins is “closing fast,” a World Health Organization-appointed team of experts said Wednesday. The investigation is at a “critical juncture” that requires urgent collaboration, but Chinese officials remain reluctant to share some raw…  read on >  read on >

Even before COVID-19, college could be a challenging experience, but a new study suggests those stresses are much higher for female students. Still, in the face of a continuing pandemic, all students may need interventions to develop healthy coping strategies, the study authors said. “They’re balancing work, classes, relationships and family — and then now…  read on >  read on >

Women smokers puff fewer cigarettes than men but have more trouble quitting, French researchers report. “Our findings highlight the need to provide smoking cessation interventions tailored to the needs of women,” said Ingrid Allagbe, a doctoral student at the University of Burgundy, who led the research. The study included nearly 38,000 smokers (about 43% women)…  read on >  read on >