If you give a vaccine to 17 million people and 40 of those are children and all 40 children dies then should we just ignore that fact because the "40 out of 17M

If you give a vaccine to 17 million people and 40 of those are children and all 40 children dies then should we just ignore that fact because the "40 out of 17MM is much more statistically significant"? Of course not.