Pfizer is working on the development of the phase-by-phase vaccine

 Encouraging news in the battle against Coronavirus, the latest tests carried out by Pfizer-Biontech show that the anti-Covid vaccine is in the pipeline.  The virologist Roberto Burioni, through his portal “Medical Facts”, commented: “It is 90% effective, maybe we are.  The preliminary results of the Pfizer vaccine seem excellent - adding - Let's hold on, because the definitive confirmation of efficacy could soon arrive and soon the end of this nightmare that we have been experiencing for many months ".

 Vaccine development

 Burioni also explained in detail that Pfizer is working on the development of the phase-by-phase vaccine: "After having demonstrated in phase 1 and 2 studies that the vaccine is reasonably safe, because it elicits a potentially protective immune response, we have moved on to phase 3  Pfizer took 44,000 people, divided them into two groups of 21,000, and half vaccinated them with the covid vaccine, half not.  Obviously the study participants do not know which group they belong to, a week after the second (and last) dose of the vaccine the researchers began to count the cases of Covid 19 that occurred in the two groups.  To date, 94 have occurred, and it seems that they are almost all among the unvaccinated.  To complete the study, it is necessary to reach 156 infected and things could also change ”.  Finally, a football comparison to explain the moment: "We are at the tenth of the second half and we are winning 3 to zero".