"But the nature of the Pfizer vaccine appears to have forced a rethink of who gets it first. Its composition means it should be moved only a limited number of times, experts believe, and as such it cannot easily be transported by healthcare staff such as GPs to care homes and older people’s private residences.
NHS officials believe that if it is moved more than four times it risks becoming unstable and ineffective. By the time it reaches UK hospitals, it will have been moved twice, from the Pfizer production plant in Belgium to storage hubs in Britain, and from those hubs to hospitals where it can be administered."
https://www.theguardian.com/world/2...pare-early-december-covid-vaccine-rollout-nhs .
NHS officials believe that if it is moved more than four times it risks becoming unstable and ineffective. By the time it reaches UK hospitals, it will have been moved twice, from the Pfizer production plant in Belgium to storage hubs in Britain, and from those hubs to hospitals where it can be administered."
https://www.theguardian.com/world/2...pare-early-december-covid-vaccine-rollout-nhs .