😷 🦠 OMICRON VARIANT Spreading Twice As Fast As Delta - SOUTH AFRICA STUDY (EVERYTHING YOU NEED TO KNOW)
Should you worry?
There was a new observational study released recently showing an increased risk of reinfection associated with the new SARS-CoV-2 variant OMICRON in SOUTH AFRICA. So, what does the data tell us? Is it more infectious? Is this something to be concerned about right now? In this video i’ll explain everything you need to know about the study. Click the video above to watch. Also, if you feel someone you know could benefit from this post, please share it with them by pressing the share button below 👇🏻.
KEY POINTS:
1.) This study aims to look at the risk of becoming reinfected with SARS-CoV-2 strain OMICRON after having primary infection
2.) VACCINE STATUS WAS UNKNOWN FOR INDIVIDUALS IN THIS STUDY. IT SIMPLY LOOKS AT REINFECTION RATES
3.) THIS IS PRELIMINARY DATA: IT WILL CHANGE, IT IS ONLY TELLING OF THE TIME PERIOD LISTED. MORE DATA IS NEEDED TO MAKE REASONABLE MENTION OF IMMUNE ESCAPE
4.) Modeling in this study compared risk of reinfection with each variant (ancestral/wild SARS-CoV-2, Beta, Delta, Omicron)
5.) Beta, Delta had lower reinfection rates compared to 1st/ancestral/wild strain
6.) FROM THE AUTHORS: Prior infection with SARS-CoV-2 provides at least 80% protection against reinfection OVERALL
7.) Specimens/test results used were from the following dates: between March 4th 2020 – November 27th 2021
8.) Study examined 2,796,982 individuals with lab confirmed SARS-CoV-2 tests who had a positive test result at least 90 days prior to NOV 27th 2021
9.) Individuals having positive test result AT LEAST 90 days after initial infection were defined as reinfected. So, at least 90 days between infections MINIMUM
10.) IMPORTANT: SOUTH AFRICAN POPULATION ONLY 24% vaccinated
11.) RESULTS: 35,670 reinfections in those 2,796,982 total individuals
12.) HAZARD OF REINFECTION VERY LOW IN BETA AND DELTA
13.) During the time between NOVEMBER 21st 2021- NOVEMBER 27th 2021 hazard ratio for reinfection comparing reinfection to COVID WAVE 1 was 2.39. THAT MEANS INDIVIDUALS WHO HAD BEEN PREVIOUSLY INFECTED HAVE AN ALMOST 2 AND A HALF TIMES CHANCE OF BEING REINFECTED WITH OMICRON VARIANT.
14.) For comparison, relative hazard ratio for WAVE 2 vs WAVE 1 - 0.75, WAVE 3 VS WAVE 1 – 0.71 - 0.75 WAVE 2 reinfection risk was only 25%, 0.71 WAVE 3 reinfection risk was only 29%. 2.39 IN RELATIVE HAZARD RATIO OF OMICRON WAVE. THE DATA FOR THAT PERIOD WAS BASED ON LOWER PRIMARY REINFECTION COEFFICIENT, AND INCREASED REINFECTION OF OMICRON. - However, the mean ratio of reinfection hazard to primary infection hazard decreased with each wave: IN WAVE #1 - 0.15 MEANING DURING WAVE 1 PROTECTION FROM HAVING PREVIOUS INFECTION WAS 85%, IN WAVE #2 – 0.12 MEANING DURING WAVE 2 PROTECTION FROM PREVIOUS INFECTION WAS 88% , IN WAVE #3 – 0.09 MEANING DURING WAVE 3 PROTECTION FROM PREVIOUS INFECTION WAS 91% , DURING OMICRON – 0.25 MEANING PROTECTION FROM PREVIOUS INFECTION PROVIDED AT LEAST 75% PROTECTION AGAINST OMICRON. MEANING AT WORST IT WENT FROM 85% PROTECTION DOWN TO 75%.
RESEARCH:
https://www.medrxiv.org/node/442565.e...
https://ourworldindata.org/coronaviru...
LETS CONNECT: