T helper cells and interleukin molecules

Cytokine Storms: The Cruel Irony of an Immune Response

When bodies fight back against infection, they can overwhelm themselves with their own destructive force.
La Malaria by Auguste Hebert

Cracking the Malaria Mystery—from Marshes to Mosquirix

It took science centuries to understand malaria. Now we’re waiting to see how the 2019 vaccine pilot works.
Dr. Anthony Fauci speaks to reporters following a meeting of the coronavirus task force at the White House on April 6, 2020

Anthony S. Fauci on Pandemic Preparedness

Before he led the effort to contain COVID-19, the nation's top infectious disease expert published several papers about pandemic preparedness. Here are two.

Two Drops of Life: India’s Path to End Polio

On the eve of its 6th polio-free anniversary, India immunizes over 170 million children, despite a lack of roads, reinfection threats, and a periodic mistrust of vaccines.
Two men wearing and advocating the use of flu masks in Paris during the Spanish flu epidemic, 1919

What’s the Difference between Pandemic, Epidemic, and Outbreak?

The World Health Organization has declared COVID-19 a pandemic. What exactly does that mean?
An illustration of a syringe and a microscope

The Measles Might Make Your Body “Forget” Its Own Immunity

Scientists have found that sometimes people infected with measles later develop "immune amnesia": their bodies don't remember being sick, even with other viruses.
A woman with a protective mask in a plane

Do Airplanes Really Make You Sick?

A Curious Reader asks: Am I really at a higher risk of getting sick on an airplane?
A pair of tweezers removing a tick

A Brief History of Lyme Disease

Lyme disease is seeing an upswing. But the-now widespread condition was not formally described until 1977, based on a case in Old Lyme, Connecticut.
armadillo

Armadillos are Cute, but They Spread Leprosy

A surprising examination of how armadillos spread leprosy.

An Eye Full of Ebola

Dr. Ian Crozier was declared cured after a harrowing bout with the Ebola virus, only to discover that his left eye was full of the virus.