Reverse cold chain is used for
The cold chain is a system of storage and transpo of vaccines at low temperatures from the manufacturer to the actual vaccination site. The cold chain system is necessary because vaccine failure may occur due to failure to store and transpo under strict temperature control (refer pgno:109 park 23 rd edition)
Carrying stool samples of polio patients from a PHC to the lab
Transpoing outdated vaccines from PHC to district hospital
Transpoing vaccine to lab, to check its potency
Transpoing vaccine from camps to sub - centre
Epidemiology