Tuesday, June 8, 2021

MRNA VACCINES REDUCE THE RISK OF CORONAVIRUS INFECTION BY 91%

 Filenews 8 June 2021



The risk of coronavirus infection of those who have been fully vaccinated with mRNA formulations (i.e. Pfizer/BioNTech or Moderna) is reduced by 91% and by about 81% in those who have only had the first dose of the vaccine, according to the US Centres for Disease Control and Prevention (CDC).

The findings, which according to the CDC "are part of the already important results for the effectiveness of real-world mRNA vaccines," emerged from an ongoing survey of nearly 4,000 people, including health workers and other workers who are most likely due to the nature of their work to be exposed to the coronavirus. Participants undergo coronavirus diagnostic tests since mid-December each week, and when some come out positive, a laboratory checks the amount of their own blood load. The researchers still check when participants received their vaccines and how they feel.

As revealed by all diagnostic tests, the risk for fully vaccinated people was reduced by 91%, while for those who had received the first dose of the vaccine by 81%, these percentages included asymptomatics as well as those who showed symptoms.

The CDC researchers also looked at how severe the symptoms of those infected with the coronavirus were while they were vaccinated, and as they found, those vaccinated -- fully or partially -- were more likely to get a lighter disease for a shorter period of time compared to those who had not had the vaccine. 'For example, fully or partially vaccinated people infected with Covid-19 spent an average of six days less sick and two 24 hours less in bed. They also had about a 60% reduced risk of developing symptoms, such as fever and chills, compared to those who had not been vaccinated," the study says. Some of the study participants did not develop symptoms.

When scientists analysed the viral load of those infected with the coronavirus, they found that those fully or partially vaccinated had 40% less detectable virus in their nasal cavities compared to those who had not had the vaccine.

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