ELI5, why do viruses and bacteria have many of the same symptoms when they infect a human?

Question

Soar throat, sniffles, sneezes, coughing, vomiting, diarrhea- any combination of these could be covid, flu, common cold, adenovirus, astrovitus, strep, etc

In: 2

Answer 1

the symptoms are always the same because the symptoms are not about the infection; the symptoms are the body’s reaction to the infection

the things you listed are how the body fights infection

the infection can vary, but since it’s always the same body, it’ll always be the same method of dispelling infection