nam/aidsmap, 7 September 2020 A study in which 24 trans women and 24 trans men who were taking gender-affirming hormone therapy were directly observed to take a daily dose of the standard formulation of the HIV prevention medication PrEP found that the levels of the two PrEP drugs tenofovir and emtricitabine were similar to the levels seen in similar cis men and women, and were all above levels...
aidsmap/nam, November 9th 2018 A study presented at October’s HIV Research for Prevention conference (HIVR4P) in Madrid shows that transgender women who are taking feminising hormones and also taking pre-exposure prophylaxis (PrEP) have levels of the PrEP drugs tenofovir and emtricitabine in their blood that are about 25% lower than those in cisgender men, and levels in rectal tissue cells...
Science Daily, March 16, 2015
A comprehensive review of the role of sex hormones in the geography of the female reproductive tract has been presented by researchers, with evidence supporting a “window of vulnerability” to HIV and other sexually transmitted infections (STIs).
Read more here