As mentioned in your VFC Program enrollment agreement, all thermometers used by VFC providers must be a continuous monitoring and recording digital data logger (DDL).
All VFC Providers will be required to provide proof of VFC approved digital data loggers when completing the VFC Provider Re-enrollment Agreement. VFC Providers will be required to document the make, model, and serial number for each digital data logger that monitors VFC supplied vaccines.
You must have a DDL for each VFC vaccine storage unit as well as a readily available backup DDL. VFC Providers can submit a plan that outlines how their office will obtain and utilize a readily available back-up DDL to the VFC Program for approval. All DDLs (including your backup DDL) must meet the CDC requirements:
- Must be a downloadable device
- Hi/Lo alarm for out of range temps
- Reset button
- Current, minimum and maximum temperatures
- Active temperature display that can be read outside of the unit
- Low battery indicator
- Accuracy of +/- 1° F (0.5° C)
- Memory stores at least 4,000 readings
- User programmable logging interval (or reading rate) with a maximum time interval of every 15 minutes
- Detachable probe in a thermal buffered material (e.g., glycol, ethanol, glycerin, glass beads, sand, Teflon, aluminum)
- Must have a Certificate of Calibration testing indicating that it meets ISO 17025 standards:
- Model/device name or number
- Serial number
- Date of calibration (report or issue date)
- Confirmation that the instrument passed testing (or instrument in tolerance)
- Recommended uncertainty of +/- one degree Fahrenheit or less
