Pfizer claims coronavirus vaccine is 90% effective in clinical trial

[السياسي]

Pharmaceutical companies Pfizer, in the US, and BioNTech, Germany, have become the first to release early results from their final stage clinical trials of a Covid-19 vaccine.

https://www.dailymail.co.uk/news/article-8929131/Pfizer-BioNTech-say-COVID-19-vaccine-90-effective.html?ns_mchannel=rss&ito=1490&ns_campaign=1490 ]قرااء المزيد ..... [/url]