Covid-19 immunization had to be suspended in nine Bavarian districts on Sunday over concerns that strict cold chain conditions had not been maintained during deliveries of the Pfizer vaccine.
The complicated logistics of the Pfizer-BioNTech vaccine’s distribution made for a bumpy start to the immunization campaign in Bavaria, Germany on Sunday. The vaccine has to be stored at extremely low temperatures to maintain the stability of proteins that trigger an immune response, and it needs to be used within days once it’s unfrozen. Now, concerns over cold chain integrity have put the vaccination on hold, Bayerischer Rundfunk radio has reported.
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