Featured in chronic illness
Long COVID reveals how little we understand the human immune system
Mast cell activation syndrome mimics allergies in many ways. But could it lead to more chronic coronavirus cases?
Vaccines may help alleviate symptoms for people with long-COVID
Here’s everything you need to know.
Keeping older folks out of COVID-19 vaccine trials hurts everyone
Failing to include older people in later-stage trials could make the treatment seem less safe.