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Related Experiment Videos

Maintaining the cold chain for vaccines.

Vladimir Petrović1, Zorica Seguljev, Branka Gajin

  • 1Sektor za epidemiologiju, Institut za zastitu zdravlja, Novi Sad.

Medicinski Pregled
|November 22, 2005
PubMed
Summary

Maintaining vaccine effectiveness relies on a robust cold chain system. This study found the cold chain in Novi Sad Health Center services to be largely safe, with Cold Chain Monitors (CCM) proving reliable for vaccine quality.

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Area of Science:

  • Immunization and Public Health
  • Pharmaceutical Logistics and Supply Chain Management

Background:

  • Vaccines are biological substances highly sensitive to temperature fluctuations.
  • Maintaining the cold chain ensures vaccine efficacy and immunization safety.
  • Assessing cold chain integrity is crucial for preventing vaccine wastage.

Purpose of the Study:

  • To evaluate the safety and integrity of the vaccine cold chain system.
  • To assess the performance of Cold Chain Monitors (CCM) and Freeze Watch (FW) indicators.
  • To identify potential risks to vaccine quality within the cold chain.

Main Methods:

  • Utilized Cold Chain Monitors (CCM) and Freeze Watch (FW) indicators for temperature monitoring.
  • Analyzed 155 CCMs and 100 FWs across two Health Center Novi Sad services.

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  • Examined temperature excursions during transport and storage phases.

    • Main Results:

    • A high percentage of CCMs and FWs were analyzed, indicating comprehensive monitoring.
    • Only one CCM indicated a cold chain break; 3 CCMs showed risk of vaccine wastage.
    • Freeze Watch indicators showed a high positive rate, indicating exposure to low temperatures during transport, with significant differences between services and storage periods.

    Conclusions:

    • The vaccine cold chain in the studied Health Center services demonstrates a high level of safety.
    • Cold Chain Monitors (CCM) are reliable indicators for assessing overall vaccine cold chain quality.
    • Freeze Watch (FW) is reliable for storage but less so for monitoring vaccine transport temperatures.