Named after Greek and Roman mythical creatures, the lymph that flows around the body helps it fight off infection and maintain a fine balance of fluids.
A protester walks past the E. Barrett Prettyman U.S. District Court House in Washington, on August 1, 2023.
Anna Moneymaker/Getty Images
COVID, the flu and RSV spread from person to person through respiratory droplets when someone coughs, sneezes or talks. Here’s how our body fights them off.
Adam Wheatley, The University of Melbourne and Jennifer Juno, The Peter Doherty Institute for Infection and Immunity
Firstly, there is no such thing as ‘too much’ immunity. Beyond the regular side-effects of a vaccine, there are no known additional risks to being re-vaccinated soon after an infection.
Amphibians have been devastated by a chytrid fungus pandemic. Researchers immunized California red-legged frogs in Yosemite to give them a fighting chance at survival, with surprising results.
In this November 1918 photo, a nurse tends to a patient in the influenza ward of the Walter Reed hospital in Bethesda, Md.
AP Photo/Harris & Ewing via Library of Congress
During the 1918 flu pandemic, white people died at similar rates to Black Americans, according to a new study – a very different pattern than what occurred during the COVID-19 pandemic.
The Chinese government has loosened restrictions designed to limit the spread of COVID-19.
Kevin Frayer/Stringer via Getty Images
Strict lockdowns, quarantines and testing have prevented many people in China from catching COVID-19. With concerns over Chinese vaccine efficacy and uptake, China may be facing a looming COVID-19 surge.