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Flying Dutchman said..
You can tell your vax protection has gone when you just tested positive for omicron
This is interesting stuff as it is to be expected to have lower protection levels. As more people get vaccinated, and the virus mutates in the vaccinated and unvaccinated, you are going to get further from the variants that the existing vaccines are based on.
There is an article on this on the news website today.
www.news.com.au/world/coronavirus/global/omicrons-rapid-spread-is-likely-due-to-its-ability-to-evade-immunity-offered-by-vaccines-study-finds/news-story/2a8c4017d6f1b28f8e4b7f52e8380cad It says:
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For the unvaccinated, Omicron had only a 1.17 times higher secondary infection rate than Delta. But for the fully vaccinated, Omicron caused 2.61 times more secondary infections than Delta, and for the booster-vaccinated, Omicron caused 3.66 times more secondary infections than Delta.
In other words, unvaccinated individuals were just as vulnerable to Omicron as they were to Delta, but vaccinated individuals were much more likely to be infected by Omicron than they were by Delta.
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Vaccine effectiveness against symptoms was reduced to around 40 per cent for the fully vaccinated and 80 per cent against severe illness for Omicron. Booster shots increased those numbers to 86 per cent and 98 per cent respectively.
Omicron is similarly effective at evading immunity offered by prior infection, according to a study from the Imperial College London Covid-19 response team.
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The new variant was 5.41 times more likely to reinfect someone who has some level of immunity than Delta was, the researchers wrote.
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