The human immune system is a network of biological processes that protects us from diseases. Every individual has an immune system specific to them, which is why, for example, some people are allergic to certain substances and others are not. There are many situations and diseases that can compromise an individual’s immune system in the short or long term. Covid 19 is one such disease and, after recovery from the virus the individual immunity can be altered.
Sistema inmunitario
![Sistema inmunitario](https://nailknowledge.org/wp-content/uploads/2021/04/immune-system-1024x567.jpg)