In the 90s it was first questioned when the protocols were set out for females, not males, to receive the tetanus vaccine over an extended period. Tetanus vaccines typically aren't given in multiple shots and males are typically more likely to be at risk for tetanus than females.
So, the UN did do it in the 90s and got caught.
The Kenyan doctors have stated that the samples were tested at a lab in South Africa. I assume they are prepared to show the test results.
Is there any antidote to this, or are the unfortunate women stuck with being unable to carry a baby to term?