Needed: Type A Negative or O negative Blood

I just recieved this from HODS.org:

If you have A negative or O negative blood, you can save a little boy's life today!

Oscar Murphy, a little 7 year-old Irish boy, is in a critical condition in a New York cancer hospital, on the Upper East Side. His blood type is very rare and Oscar needs a daily supply of blood - that cannot be stored - to stay alive. The process takes 2 hours and needs to be scheduled by calling 1-212-639-7643. Let them know that you are giving blood for Oscar Murphy patient number 35085174 and tell them you heard about Oscar through the HOD Society. (www.oscarmurphy.net) Please forward this message!!!