Participated in the study 569 Massachusetts residents who were infected in a July outbreak in Barnstable County. Also, no deaths were reported among them.
Among the vaccinated group, one had received the Pfizer vaccine and the remaining three had received Johnson & Johnson. The vaccinated people were in their 20s and 70s, and two had underlying health problems.
The researchers found evidence that Viral loads were similar among 127 fully vaccinated people. Another 84 who were not vaccinated, were partially vaccinated or whose vaccination status was unknown.
When we talk about viral load we mean a probability indicator due to someone passing the virus to other people.
“The recommendation to wear masks has been updated to ensure that the vaccinated public does not unknowingly transmit the virus to others, including their unvaccinated or immunosuppressed loved ones.”Walensky stated.
Research showed that the Delta variant was approximately as transmissible as chickenpox, while an early strain was closer to the common cold.
In that sense, an infected person may have transmitted the virus to two or three people, on average, at the beginning of the outbreak. But now, with the delta variant, that number could be five to nine.
The study also notes that new infections are expected, especially as the portion of the vaccinated population grows. “As population-level vaccination coverage increases, vaccinated people are likely to account for a higher proportion of covid-19 cases. “the authors wrote.
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