@WHO: The Pfizer/BioNTech #COVID19 vaccine requires to be stored at -60°C to -90°C, making it more challenging to be deployed in settings where ultra-cold chain equipment is not available. WHO supports countries in assessing their delivery plans & preparing for use where possible. https://t.co/xPQbjMyTzY

@WHO: The Pfizer/BioNTech #COVID19 vaccine requires to be stored at -60°C to -90°C, making it more challenging to be deployed in settings where ultra-cold chain equipment is not available. WHO supports countries in assessing their delivery plans & preparing for use where possible. https://t.co/xPQbjMyTzY

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