For much of the COVID-19 pandemic, doctors have told patients who get a negative result after taking a rapid antigen test at home to test again 48 hours later. A new study confirms that’s the right advice. Whether you have symptoms or not, repeat testing after 48 hours may be required to rule out COVID…  read on >  read on >

Under the surface of your favorite swimming pool, beach and lakes, hazards too small to be seen by the naked eye may await. And these bacteria, viruses and parasites can turn a refreshing plunge into a nasty infection. “There’s a variety of microorganisms that can make recreational activities in water less than fun,” said Dr.…  read on >  read on >

Bacteria found in hospital patients in Ukraine is showing extreme antibiotic resistance, making it harder to treat the wounded and ill in this war-torn country, new research warns. “I am quite thick-skinned and have witnessed numerous situations involving patients and bacteria,” said study author and bacteriologist Kristian Riesbeck. “However, I must admit that I have…  read on >  read on >

Fewer teens consider themselves overweight and more underestimate what they weigh, a perception concerning to experts worried about childhood obesity. These trends could reduce the effectiveness of public health interventions meant to help young people lose weight, researchers warn. Their findings were published July 3 in the journal Child and Adolescent Obesity. “Young people who…  read on >  read on >

More than 2 million people in the United States have hepatitis C, but most are not getting the safe treatment that can cure the disease, public health officials said Thursday. A new U.S. Centers for Disease Control and Prevention report details this problem and highlights the need for a proposed national program to expand access…  read on >  read on >

Animal research is pointing toward a new way to prevent HIV infection: a refillable implant that continuously delivers antiretroviral medications for up to 20 months at a time. Antiretrovirals are the cornerstone of PrEP, an infection prevention protocol that has been around since 2012. But the new approach — though so far only tested in…  read on >  read on >