It seems like most of the organizatios doing great work that i donate to mention mass vaccination as one of their major focuses. From all the reading I have done it seems that the vpd's (childhood killers as they are called) are responsible for a considerable number of deaths. I recognize that most likely it may not specifically be the disease that causes death but the combination of poor sanitation, malnutrition, no access to medical care, etc.. infestations of parasites, all these factors contribute to why these diseases are so deadly. My question is....in the case of developing world are vaccinations necessary?? Does the good out weigh the harm? I have also read and don't know if it is true but have read that the vaccines with mercury did not get destroyed but got sent over to the developing world??