According to new data, those who have been vaccinated against Covid-19, can still harbour virus levels as high as unvaccinated people if infected with the Delta variant. This new data suggests that hitting the threshold for herd immunity remains unlikely. However, it evidence does show vaccination still offers protection against hospitals and infection.
“We don’t yet know how much transmission can happen from people who get Covid-19 after being vaccinated – for example, they may have high levels of virus for shorter periods of time, but the fact that they can have high levels of virus suggests that people who aren’t yet vaccinated may not be as protected from the Delta variant as we hoped.” said Sarah Walker, a professor of medical statistics and epidemiology at the University of Oxford.
Source: The Guardian, 19 August 2021
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