Everyone knows that the immune system is responsible for fighting off illnesses, but you might not know that it's doing a lot more behind the scenes.

How does the same infection, say the flu or a cold, give some people mild symptoms and leave others suffering? Why do people develop autoimmune diseases? And will we ever be able to predict when—and ...

Every day, your immune system performs a delicate balancing act, defending you from thousands of pathogens that cause disease while sparing your body's own healthy cells. This careful equilibrium is ...

Measles can induce immune amnesia, a phenomenon that eliminates acquired immunity to other infectious diseases.

I am lying under a blanket, feeling rough, staring at a bowl of oranges. Every fibre of my being is urging me to devour the lot. I can hear my mum – and medical friends at university – insisting that ...