No men can have it too. It's about 15% of the caucasian population, 6% African and 10% asian population.
The thing is if you have a child and the father is rhesus positive there can be complications. .
Rhesus is a protein found on the surface of blood cells. If'f you're negative it means you dont have it on yours. If your baby is positive it means that it does have it on it's. Your body may see this blood a s foreign and devlop antibodies which can attack the baby.
But these potential problems are well known and are routinely handled these days and complications from it are very rare.