Podcasts Health Dr. Howard Smith Oncall CoVid Immunity After Infection Then Vaccination

CoVid Immunity After Infection Then Vaccination

Published: Feb. 26, 2021, 10:22 p.m.

 

Vidcast:  https://youtu.be/lRPUg3oybhg

 

CoVid survivors have only weak immunity to the original Wuhan virus by 4-8 months after infection, and their ability to resist the South African B.1.351 variant is poor.   The good news that a single dose of either the Moderna or Pfizer vaccines raises their immunity 1000-fold to the Wuhan strain while their immunity to the South African strain is only 2-3 fold lower.

 

Seattle investigators studied the sera from 10 participants recovered from CoVid before and after vaccination with an mRNA CoVid vaccine.  One shot of vaccine bumped up protective antibody titers to over 14,000 against the Wuhan and over 5,000 against the South African strain.

 

https://www.medrxiv.org/content/10.1101/2021.02.05.21251182v1.full.pdf+html

 

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