R.J.
It's just coincidence.
Hospitals do have "runs" (like more girls this week, or 3 babies with kidney problems), but the hospital down the road will be having a run on boys or babies with heart problems. It all evens out.
Mmmm.... I should edit just a bit. When it's NOT coincidence it's time to MOVE. I won't list out all of the tetrogens that can affect sex or create physical problems... but when stats really DO change it's typically because of a major pollutant (hormones, toxins, radiation, etc.) in the ground water or air.