Blood emergencies.

You probably helped out or just encountered messages seeking help through blood donations, bone marrows for a patient nearing his/her last breath.
You would have also thought that it's a pretty slow process of gathering a sizeable donor group size, sometimes the emails you get are seriously and sadly outdated. And you probably doubted its authenticity.
What can be done ?
Pen your thoughts and maybe you'd want to express it out loud someday, to make a difference.