US-based SpotSee has introduced new temperature thresholds for its WarmMark indicators in a bid to address temperature needs associated with vaccines for Covid-19.
The indicators will be used to check whether temperature and time tolerances are maintained while transporting and before administration of Covid-19 vaccines.
SpotSee CEO Tony Fonk said: “In the rush to get vaccines developed and distributed to vaccination sites, there hasn’t been much attention paid to the last ten feet after the vaccines have thawed at the administration site, where the opportunity for vaccine efficacy erosion due to temperature exposure is greatest.
“Our indicators help administrators in hospitals, nursing homes, retail pharmacies, and other vaccination sites know if a vaccine has exceeded its temperature threshold over time.”
According to the Centers for Disease Control and Prevention’s (CDC) guiding principles, the Covid-19 vaccine must maintain a specific temperature threshold.
SpotSee’s WarmMark indicator can be put into use at various times throughout the vaccine supply chain.
It can be used at the point of production or when bulk shipments are broken down into smaller, insulated shippers. The major use of the WarmMark indicators is at vaccine administration sites.
SpotSee noted that when refrigerators are opened and closed frequently, vaccines are exposed to varying temperatures and this is where most temperature-related efficacy and safety issues can occur.
SpotSee’s indicator is available in different temperature sensitivities, ranging from -18°C / 0°F to 37°C / 99°F with certain requirements for acceptable out-of-refrigeration periods.
The new variants have both 8°C and 25°C versions with shorter run-out times.
The new time and temperature ranges are 8°C / 6 hours, 8°C / 14 days, 25°C / 6 hours, and 2°C / 48 hours.
To maintain vaccine efficacy throughout the supply chain, the indicator can be applied to packaging before shipping or storage.
Furthermore, the low-cost solution provides an easily readable indication for healthcare workers before vaccinating patients.