Temperature Data Analysis of Diphtheria-Tetanus-Pertussis and Hepatitis B Vaccine Cold Chain Monitoring in Northern Part of Thailand

Abstract

Background Information: Vaccines are temperature-sensitive biological preparations, the proper range were cold chain period or 2-8 °C. The change of the temperature or cold chain breakdown might be effect to vaccines quality assurance.Aim: The temperature data of Diphtheria-Tetanus-Pertussis and Hepatitis B vaccine, DPT- HB vaccine in fiscal year 2011-2012 were analyzed and aimed to find the factor that effected to vaccine cold chain system.Method: Temperature data from health care units in 8 provinces collected by computerized data logger were analyzed by SPSS for window version 17.0 and Logtag analyzer program.Result: From 322 health care units, most of data was reported from Chiang Rai province and collected from Primary Care Unit; PCU in both fiscal year. The period of time for recording of the data logger were very fluctuates. The highest number of data was reported in October, 2011 and in February, 2012. DPT-HB vaccine temperature had lower than 2°C at 86.9%, higher than 8°C at 90.4% in 2011, and lower than 2°C at 78.5%, higher than 8°C at 92.5% in 2012. Type of health care unit did not effect to vaccine’s temperature monitor but seasonal had significant effect.Conclusion: Type of health care unit did not effect to vaccine’s temperature control. Seasonal had significant effect to vaccine’s temperature control. Based on the study results, adequate equipment, provide training and supervision about new and current computerize data logger were recommended to support to maximize the efficacy and effectiveness of vaccine and cold chain monitoring in health care unit.