The cold chain
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The cold chain

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The cold chain The cold chain Presentation Transcript

  • The Cold Chain
  • How you would store these products?• Vaccine• Tetracycline• Penicillin/Streptomycin• Eye drops• Vitamins• Anthelminthics
  • Potency 100 80 60 40 20 0 1st 3r dImproper storage of products (vaccines) leads to Q tr Q trloss of potencyPotency - induces a good immune responseOnce potency is lost, it cannot be regained.
  • The Cold Chainis the system that is used to ensure thatproducts that need special handling are keptwithin the safe temperature range of +2°Cand +8°C.
  • The Cold Chain
  • Three key elements• Personnel: to manage vaccine storage and distribution.• Equipment: to store and transport vaccine• Procedures: to ensure that vaccines are stored and transported at appropriate temperatures.
  • Key Points• Maintain efficient cold chain from point of manufacture to vaccine use.• All vaccines are damaged by temperatures > +8°C: a lot of heat x short time or small amount of heat x long period.• Loss of potency is permanent and irreversible.• Failure in one link of cold chain will affect product potency. Good handling after that will not restore lost potency.• Repeated cold chain failure has additive effect on product potency.• Physical appearance of damaged vaccine may remain unchanged.
  • Healthy poultryHealthy peopleHealthy communities