What exactly causes this phenomenon isn't clear not very much studied, but there are other places in the world which present an even more interesting case. For example, Miejsce Odrzańskie village in Poland has been known for the strange phenomenon not giving birth to a boy for 10 years.

https://www.nytimes.com/2019/08/06/world/europe/poland-village-girls-no-boys.html

Get the Medium app

A button that says 'Download on the App Store', and if clicked it will lead you to the iOS App store
A button that says 'Get it on, Google Play', and if clicked it will lead you to the Google Play store