Vaccines for developing countries

With the news media reporting a large conference on getting vaccines to children in countries too poor to pay for vaccinations
Guardian & Telegraph
 I was interested in the Christian Medical Fellowships blog post here

I remember speaking to a man  with extensive experience of working in impoverished countries and seeing preventable death  among children at first hand saying that, he never got used to it and neither do the parents of the children.
Any help we can give ,however imperfect, must be a good thing