The immune system is a vast network of cells, tissues, and organs that coordinate your body’s defenses against any threat to your health. Since the beginning of mankind, the immune system enabled us to overcome several deadly epidemics and was instrumental to our evolution: ”What doesn’t kill you makes you stronger”. This popular saying most probably was in reference to our exceptional immune system. The more challenged was our immunity the stronger it became throughout the millennia. Without it being as strong as it is now, you’d be exposed to billions of bacteria, viruses, and toxins that could make something as minor as a paper cut or a seasonal cold fatal. So how does it work? Emma Bryce takes you inside the body to find out.

The immune system is made of the innate and adaptative immunity

What is herd immunity?

Herd immunity is the phenomenon in which the population is no longer vulnerable to infectious diseases due to the presence of antibodies from the infectious agents (bacteria, virus, etc.) in so many individuals, that infectious agents have a hard time being in circulation. Herd immunity can be achieved either through infection and recovery of individuals or through vaccination.