I understand the risks, what constitutes testing and what does not.  I have so far tested negative with fourth generation on day 20 and 24.  So my questions are as follows:

1. If I wanted to get conclusive results the quickest way possible, should I get a 4th generation and RNA test done on day 28 or will I need to wait until day 42 to take a 4th generation?  

2.  Is my day 24 test a good indication that I do not need to excessively worry about day 28 results?  

3.  The Scripps HIV vaccine that is showing great success during the first round of human clinical trials, is that preventative or therapeutic?  Do you believe there is a cure on the horizon?  

1.  How soon a person can consider their results conclusive is challenging.  In general, currently available, 4th generation combination HIV antigen/antibody tests are considered absolutely conclusive at 6 weeks (42 days) after exposure.  At 4 weeks (28 days) 4th generation tests are more than 99% conclusive.  RNA PCR tests generally become positive sooner than than the 4th generation tests. The advertisers say that their results are conclusive at 11-13 days after exposure but most experts would like to see negative RNA PCR test results confirmed with a 4th generation test 4-6 weeks following exposure.  In general, if a HIV PCR RNA test is negative at 11-13 days and a 4th generation test is negative at 4 weeks, I would consider those results absolutely conclusive.

2.  I would consider it very strong evidence that your subsequent tests will be negative.

3.  The Scripts vaccine is targeted to be a preventative vaccine. The current trial was a phase 1 trial which does not provide data regarding it's efficacy and is considered a "proof of concept" trial.  There is much to be done before you can bank on it's success.  OTOH, it uses new technology which is hopeful and promising

Hope this information is helpful.  EWH

Also, if I had sex on day 7 after potential exposure and tested negative duo on day 30, can I be sure, even if I tested positive at 6 weeks, that I would not have infected this person on day 7?  

Thank you,