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Optimizing Data Logger Setup for Vaccine Temperature Monitoring



Michal J. Chojnacky, Luis Chaves Santacruz, W Wyatt Miller, Gregory F. Strouse


Accidental freezing of refrigerated vaccine represents a significant public and private healthcare cost. Freeze-damaged vaccines lose their effectiveness, putting communities at risk. U.S. immunization programs have strengthened vaccine storage and handling recommendations to mitigate this danger. However, current publications describing the setup of a vaccine temperature monitoring device allow for a range of untested interpretations. In this paper, we report on our study of specific temperature monitoring setup variables, including vial size, thermal buffer type, buffer fluid concentration, and placement of the probe-in-vial setup, in an effort to provide more definitive guidance on the selection of an optimal temperature monitoring setup and methodology for use in vaccine storage refrigerators.
NCSL International Measure


vaccine, temperature monitoring, data logger, glycol, buffer fluid, buffer media, glass beads, Vaccines for Children, Centers for Disease Control, vaccine refrigerator, vaccine storage, cold chain, calibration, validation, ice melting point


Chojnacky, M. , Chaves, L. , , W. and Strouse, G. (2015), Optimizing Data Logger Setup for Vaccine Temperature Monitoring, NCSL International Measure, [online], (Accessed July 23, 2024)


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Created September 1, 2015, Updated February 19, 2017