Vidcast:  https://youtu.be/d--z8RQ_rNo

 

When the anti-CoVid potencies of the 4 most popular vaccines are measured head-to-head, the Moderna mRNA vaccine just slightly edges out the Pfizer but both mRNA vaccines clearly beat the viral vector vaccines marketed by Johnson and Johnson and AstraZenaca.  These relative vaccine strengths are even more notable against the Omicron variant.

 

Investigators at the University of Amsterdam and Cornell University studied sera from vaccinated Dutch health care workers most of whom were 35 to 60 years of age.  When we look at the neutralization strength of antibodies induced by each of the vaccines, we see that the mRNA vaccines continue to produce impressive protection against even the Delta variant.  Their protection tanks when they face the Omicron variant with only the Moderna vaccine offering any substantial protection for some individuals.  The J&J and AstraZeneca vaccines, while offering moderate protection against most variants, failed miserably against Omicron.

 

Interestingly, the protection of all vaccines against the Beta variant, B.1.1.351, that arose like Omicron in South Africa, was reduced compared with that against the wild type and other variants except Omicron.   There is something about South Africa that births some interesting CoVid variants.

 

https://www.medrxiv.org/content/10.1101/2021.09.27.21264163v2.full.pdf+html

 

#CoVid #vaccines #mRNA #adenoviralvectors #omicron #beta