Why is it possible to catch a cold many times? A There are many different types of cold viruses that cause similar symptoms.

B The microbes reproduce too quickly for the body to become resistant.

C Some of the microbes that cause a cold become resistant to the antibiotics used in treatment.

D The body does not produce antibodies when fighting a cold, so immunity does not develop.

Which of the following accounts for someone who has had regular herpesvirus-mediated cold sore or genital sore flare-ups? a) re-infection by a closely related herpesvirus of a different strainb) re-infection by the same herpesvirus strainc) copies of the herpesvirus genome permanently maintained in host nucleid) copies of the herpesvirus genome permanently maintained in host cell cytoplasm