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  • CRISTINA G. REAL

    Madrid

Updated on Tuesday, 22 September 2020 - 14:22

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    "At Pfizer-BioNtech it is manufactured at risk to have the vaccine as soon as possible"

Talking about the vaccine against Covid-19 is, to say the least, not very rigorous.

To begin with because, according to WHO data, there are currently 176 investigational vaccines, of which 34 are in the clinical phase, and seven of these are in phase III.

They are all different from each other

, either because they are developed on different platforms or technologies, or because they use different immunogens.In addition, also from the WHO, vaccines are classified into

two large groups

: those used to

treat

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