Reverse cold chain is for-

Ans. is 'b' i.e., Polio "Reverse cold chain" is for transpo of ble poliovirus in stool to an investigation centre. To isolate polio virus from stool, the sample needs to be maintained at 4-8deg C or stored at - 20degC from the moment of collection, to processing in the laboratory. This process for maintaining the bility of polio virus is called 'Reverse cold chain'. o So, in reverse cold chain i) Temprature for transpoation --> + 2 to +8degC. ii) Temprature for storage --> -20degC. o Specific red vaccine carrier is used in reverse cold chain.