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Posted on: November 14, 2020

Media Release COVID-19 - November 14, 2020

For Immediate Release

11/14/2020                        

Phone: 980-432-1800
Website: www.rowancountync.gov/covid-19
Email: covid-19@rowancountync.gov

Rowan County Case Information: https://bit.ly/rowan-covid19-hub

Join us Saturday, November 14th, 2020 from 10 AM - 2 PM for COVID-19 testing at Park Plaza in Spencer


Pfizer Says Experimental COVID-19 Vaccine Is More Than 90% Effective


Pfizer's experimental COVID-19 vaccine appears to be working. The vaccine was found to be more than 90% effective, according to clinical results released by the company earlier this week.

That news comes from an interim analysis of a study involving 43,538 volunteers, 42% of whom had "diverse backgrounds."

Each participant got two injections spaced 21 days apart. The analysis compared the number of cases of COVID-19 among the volunteers getting the vaccine with an approximately equal sized group of volunteers who got an injection of a liquid that didn't contain the vaccine.

In a news release from Pfizer and its partner BioNTech, the company said results from 94 evaluable cases of COVID-19 among study participants indicated the vaccine is more than 90% effective in preventing COVID-19. The Food and Drug Administration set a minimum effectiveness bar at 50%This is the first COVID-19 vaccine in development to have data showing that it exceeded that mark.

"Greater than 90% efficacy at preventing disease, with 94 COVID-19 cases to evaluate, is an excellent outcome! It would be good to see more of the data, but those are very convincing numbers." While promising, this analysis alone does not provide enough information about the vaccine for Pfizer to ask the FDA for permission to distribute it.


The agency has informed manufacturers that it wants a minimum of two months of follow-up data from at least half of the volunteers. The FDA says the reason for that requirement is that most dangerous side effects from a vaccine occur within two months of getting the final injection. Pfizer says that data won't be available until the third week in November.

 

The company didn't say how serious the COVID-19 cases were that occurred in the study, or whether any of them required hospitalization. Natalie Dean, a biostatistician at University of Florida, says she's cautiously optimistic, but waiting for more data.

 

"There remain many open questions, such as how well the vaccine is working across different age groups, how well it is preventing infection and severe disease," Dean wrote in an email to NPR. "But for the pre-specified primary endpoint of laboratory-confirmed symptomatic disease across the trial population, the numbers look very good."

The Pfizer vaccine trial is what's known as an event-driven study. It does not last for a specified period of time. Instead, the study will continue and won't be considered complete until it has recorded a total of 164 cases of COVID-19 among all the volunteers.

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Contact:
Amy Smith
704-216-8859
amy.smith@rowancountync.gov

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