Explain two ways microorganisms make you feel ill.?

Question

I'm stuck on a question in my GCSE science textbook. please help ASAP. thanks :o)

Answer 1

1). They can attack you're immune system and weaken you, thus you feel ill.

2). They may have many side effects and even though one will not effect you others might.

I did my best, wow that was hard!

Hope this helped!! :]