Answer the following questions either in a word document or in the text box.

What special or unusual thing was done to the rats to be able to carry out the research?

How did Michael Callen and Richard Berkowitz go about warning the gay community of the risks and the best method of prevention of HIV?

What changes have recently happened in the gay community to cause an increase in HIV infection rates? What are one or two reasons this may be happening?

What is “sero-sorting?” Do experts believe it is effective? What are the risks?

What is post-exposure prophylaxis (PEP) AND what is pre-exposure prophylaxis (PrEP)? Were either effective? What was the evidence?