Fig. 3.

Illustrative temperature profile for the segment of the vaccine supply chain managed by the government. (a) The x-axis is indicative of time as the vaccines move from the provincial warehouse to health centres refrigerators. The peaks and troughs in the temperature curve at health centre level reflect the poor performance of the vaccine refrigerators equipping government run health clinics and their inability to adequately maintain stable temperatures irrespective diurnal or seasonal changes in ambient temperatures over the 8 months study period for temperature monitoring.