Graphic-output temperature data loggers for monitoring vaccine refrigeration: implications for pertussis.

Baylor College of Medicine, Houston, TX, USA.
American Journal of Public Health (Impact Factor: 4.55). 11/2010; 101(1):46-7. DOI: 10.2105/AJPH.2009.179853
Source: PubMed

ABSTRACT We conducted the first US study using graphic-output temperature data loggers in quantifying cold chain failure. Fifty-four vaccine refrigerators of a county outpatient health system were studied. Forty-eight percent maintained temperatures of 2°C to 8°C and 24% had protracted periods of temperatures less than 0°C. The correlation between the percentage of refrigerators with freezing temperatures and the pertussis rate for each health region was r = 0.76. The findings suggest that improper vaccine storage may have contributed to recent increases in pertussis rates.

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Available from: Patrick Mccolloster, Mar 10, 2014
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