If medical treatment can be required when humans come into contact with microorganisms, then with the exception of allergies, what may cause a person to seek medical attention?

Answer choices:
- Contact with latex
 - a tree falling
 - Organs within the body.
 - Contact with baby chicks
 - prolactin release
 - Contact with peanut butter
 - hypothyroidism
 - Contact with microorganisms

 

        Contact with microorganisms  