Tag Archives: epidemiology

The original version of this story appeared in Quanta Magazine. For a pathogen to make us sick, it must overcome a lot. First it has to enter the body, bypassing natural barriers such as skin, mucus, cilia, and stomach acid. Then it needs to reproduce; some bacteria and parasites can …

The US is enduring a sharp spike in cases of babies born with syphilis, an illness that not only threatens infants’ health, but also shows that the system providing healthcare for pregnant women is fracturing. Congenital syphilis has risen to its highest rate in 30 years, according to a recent …

This story originally appeared in The Guardian and is part of the Climate Desk collaboration.Avian flu has reached the Antarctic, raising concerns for isolated populations of penguins and seals that have never been exposed to the deadly H5N1 virus before. The full impact of the virus’s arrival is not yet …

In the last hard days of World War I, just two weeks before world powers agreed to an armistice, a doctor wrote a letter to a friend. The doctor was stationed at the US Army’s Camp Devens west of Boston, a base packed with 45,000 soldiers preparing to ship out …

This story originally appeared on Hakai and is part of the Climate Desk collaboration. There was a time when we human beings used to put animals on trial for their alleged crimes against us. The earliest of these prosecutions in the Western tradition of law appears to be a case …

Fall has arrived, flu shots are rolling out in pharmacies, and pediatricians are watching for an uptick in respiratory syncytial virus, or RSV. In other words, it’s virus season. Covid deaths and hospitalizations also began rising at the end of July, and wastewater surveillance that looks for the virus has …

On the morning of September 11, critical care specialist Anoop Kumar was presented with an unusual situation. Four members of the same family had been admitted to his hospital—Aster MIMS in Kozhikode, Kerala—the previous day, all similarly sick. Would he take a look? He gathered his team of doctors to …

This August, government airplanes and helicopters have been dropping tiny parcels from the sky for raccoons to find. Each one is about the size of a ketchup packet and contains an oral rabies vaccine that coats the mouth of the animal that bites into it. The vaccine is the United …

In February, a dermatologist in New York City contacted the state’s health department about two female patients, ages 28 and 47, who were not related but suffered from the same troubling problem. They had ringworm, a scaly, crusty, disfiguring rash covering large portions of their bodies. Ringworm sounds like a …