Pfizer announced on Tuesday that it has developed a new version of its coronavirus vaccine that could be stored between 36F (2C) and and 46F (8C) for up to 10 weeks.

https://www.dailymail.co.uk/health/article-9542707/Pfizer-working-new-version-Covid-vaccine-stored-refrigerator.html?ns_mchannel=rss&ito=1490&ns_camp aign=1490 ]قرااء المزيد ..... [/url]


Pfizer is working on a new version of its Covid vaccine that could be stored in refrigerator