WHO: Controlled Temperature Chain (CTC) – Delivering vaccines more easily.

The Controlled Temperature Chain, CTC, is an innovative approach to vaccine management allowing vaccines to be kept at temperatures outside of the traditional cold chain of +2°C to +8°C for a limited period of time under monitored and controlled conditions, as appropriate to the stability of the antigen. This first of three episodes explains what CTC is, why it is useful and how it is feasible. For more information: http://www.who.int/immunization/progr...