Unfortunately, the provided reference does not definitively state which specific country has the highest rate of infertility. It only mentions that the highest increase in male infertility is estimated to be in Asia, and the highest increase in female infertility is also in Asia and North America. Therefore, identifying one single country with the highest overall infertility rate isn't possible based on this information alone.
To accurately answer this question, we would need more specific data that compares infertility rates across individual countries, not just regional increases.
