There are multitude tests on the market. No one here is intimately familiar with the specifics of each test, and some are regionally-specific. Call the manufacturer if you have questions. That's the only thing anyone can tell you.
Your obsession with these groups is irrational. You are assuming that 1) your partner was HIV+, 2) had traveled to Cameroon and had intercourse and contracted HIV there, and 3) You contracted HIV from a one-time event, despite the odd of that happening being 0.06%. The odds of all three of those being true are astronomical.
In any case, no one here can assist with your highly-specific question.
Call the test manufacturer or discuss your concerns with the clinic that gave you the test. We can't possibly be familiar with every HIV test manufactured. Most tests distributed at this time cover all strains/variants.
You really should forget about this and move on, though. Your event was extremely low risk. A one-time encounter of vaginal sex only carries about an 0.04% risk of infection.