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Graphic-Output Temperature Data Loggers for Monitoring Vaccine Refrigeration: Implications for Pertussis

2010; American Public Health Association; Volume: 101; Issue: 1 Linguagem: Inglês

10.2105/ajph.2009.179853

1541-0048

Patrick McColloster, Carlos Vallbona,

Pneumonia and Respiratory Infections

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.