At the moment, it's receiving the Pfizer-BioNTech and Moderna vaccines. In the future, the Health Service Executive expects six different Covid-19 vaccines to be stored here. The Pfizer-BioNTech vaccine is the trickiest to handle. It has to be stored at ultra-low temperatures, between -70C and -90C. The Citywest facility, used for the HSE’s National Cold Chain Service, has ten ultra-low temperature freezers for the Pfizer-BioNTech vaccines, another five freezers for the Moderna vaccines, which are stored at -20C, and large freezers with temperatures between -2C and -8C, for any future vaccines. From arrival in the warehouse to handover at the vaccination site the vaccines are temperature checked and tracked by GPS.