Dr. Howard Smith Oncall

Moderna Twice As Protective Against Delta CoVid As Pfizer Vidcast:  https://youtu.be/vhmIGC8Db4k   Those vaccinated with the Moderna mRNA CoVid vaccine are now about 50% less likely to develop a positive CoVid PCR test when compared with those who received the Pfizer vaccine.  This conclusion comes from a massive Mayo Clinic Health System study.  The researchers tabulated the month by month effectiveness of the two mRNA vaccines December 2020 to July 2021 in each of 5 states as Delta became the most prevalent form of CoVid.  They analyzed data from over 636,000 patients with at least one positive CoVid PCR test.   Initial data presented to the FDA by Moderna and Pfizer indicated that each vaccine was about 94% effective against the original wild type of CoVid.   Just looking at Mayo’s month by month Minnesota experience, as the Delta variant became more prevalent, each vaccine became less protective against CoVid but Pfizer also became significantly less protective than Moderna.  Data  in July for the 5 state