I searched about it just now。Someone lives in Hong Kong said on June 4th that MERS made no difference on local people.They still went to school and went shopping as before.The government responded to it swiftly.The source of propagation was found and isolated.Hope you have a nice trip if you decide to go to Hong Kong.

You should consult a doctor to learn how to protect yourself better when you're there. And don't ever forget to use face mask! Don't touch everywhere especially in such places like metro (and be sure you wash your hands regularly and don't touch your face with your dirty hands) Since China is such a crowded country the risk of you to get infected is very huge. Can't you reschedule your plans maybe you can go there sometime when it's more safe? I don't know hahah I wish you the best luck to stay healthy and enjoy! ^^