The ECHO trial faces backlash and criticism.
Experts Flummoxed By Conflicting New Data on STIs, HIV, and Long-Term Contraception in Sub-Saharan Africa
ECHO trial results and follow-up studies find unexpectedly low rates of some STIs among users of certain long-term hormonal contraceptives. They also find high HIV rates (unrelated to the contraceptives) that suggest considerable value for PrEP integration.
No meaningful difference was found in either injectable or implant birth control when compared to an IUD.