Microorganisms can cause infections.
Infections usually require medical treatment.
Medical treatment can be required when humans come into contact with microorganisms.
With the exception of allergies, what may cause a person to seek medical attention?

A. Contact with latex
B. a tree falling
C. Organs within the body.
D. Contact with baby chicks
E. prolactin release
F. Contact with peanut butter
G. hypothyroidism
H. Contact with microorganisms