Have there been any studies on fertility? We had to do IVF, but aren't there movies about an 'innocent' low-symptom virus that ends up leaving half the world o

Have there been any studies on fertility? We had to do IVF, but aren't there movies about an 'innocent' low-symptom virus that ends up leaving half the world or more unable to bear children? That could be an issue if we want to continue to exist as a species. Good for the environment though!