The need for quality control in the developing countries.

In the developing countries there is a need for greater activity in the quality control of vaccines used in immunization programmes. The establishment of a quality control facility can give assistance not only in the checking of vaccines at the time of release, but also in monitoring the efficacy of the cold chain. Furthermore, the antibody responses of the local child population to the vaccines can be measured. Quality control should be established before vaccine manufacturer, therefore, and the economics of importing vaccine in the bulk concentrated form with dilution, blending and filling locally is worthy of consideration.