Early Reports: Pfizer Coronavirus Vaccine 90% Effective

c0lo writes:

BBC - Covid vaccine: First 'milestone' vaccine offers 90% protection

The first effective coronavirus vaccine can prevent more than 90% of people from getting Covid-19, a preliminary analysis shows.

The developers - Pfizer and BioNTech - described it as a "great day for science and humanity".

Their vaccine has been tested on 43,500 people in six countries and no safety concerns have been raised.

The companies plan to apply for emergency approval to use the vaccine by the end of the month.

How effective could it be?

A vaccine - alongside better treatments - is seen as the best way of getting out of the restrictions that have been imposed on all our lives.

The data shows that two doses, three weeks apart, are needed. The trials - in US, Germany, Brazil, Argentina, South Africa and Turkey - show 90% protection is achieved seven days after the second dose.

However, the data presented is not the final analysis as it is based on only the first 94 volunteers to develop Covid so the precise effectiveness of the vaccine may change when the full results are analysed.

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