Reverse cold chain is for-
Measles
Polio
Rubella
Peussis
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.