<prompt> At PHC level vaccine storage is by?IRLWalk in cold roomsCold boxesvaccine carriers  <response>: .ice lined refrigeratorsILRare mkept at the PHC level.the cabinet temperature is maintained at 2 to 8 degree celsius.at the PHC level,ILR s are used to store all UIP vaccines.they are lined with tubes or ice packs filled with water which freezes and keeps the internal temperature at a safe level.ref:park;s textbook of preventive and social medicine,22 nd edition ,pg no 104 