Vaccinated spread COVID-19 in the same way as non-vaccinated people

Since mid-2021, the most dangerous variant of the Delta coronavirus
has begun to spread around the planet. Including he caused a wave
of diseases in the United States. At the same time, scientists began
to pay attention to the fact that outbreaks of disease occurred in
crowded collectives both among unvaccinated people and those who
received two doses of the vaccine. In particular, a similar situation
was noted in a federal prison in Texas, where the total number of
infections was 74%.
Among the unvaccinated prisoners, the number of infections was
93%, and among the vaccinated - 70%. To find out the degree of
infectiousness of patients of both groups, that is, vaccinated and
unvaccinated people, experts from the Center for Disease Control
and Prevention, with the support of the US Federal Bureau of
Prisons, conducted a study, the details of which can be found
on the medRxiv preprint service (https://bit.ly/3pdllrc).
The authors of the work took nasal swabs. To find out how long
viruses live on mucous membranes in vaccinated and unvaccinated
people, tests were performed daily. 95 people infected with the
SARS-CoV-2 virus agreed to donate smears. Among the volunteers,
78 people, that is, 82%, were fully vaccinated. Another 15 people,
that is, 16% of the participants in the experiment, were not
vaccinated. One person was partially vaccinated. Most of the
participants in the experiment were vaccinated with the Pfizer
vaccine - about 73%, also 18% of those vaccinated received the
Moderna vaccine, and another 9% received the Janssen vaccine.
The test results showed that viruses on the mucous membrane live
for 13 days in both vaccinated and those who have not been
vaccinated.
The result was distinguished only in those who had previously been
ill with coronavirus; the virus in their nasopharynx lived for no
more than 10 days. It didn’t matter whether they were vaccinated or
not. Further research showed that there is no statistical difference
in the degree of infectivity between vaccinated patients and those
who did not receive any vaccinations. Thus, the results of the study
showed that vaccination does not affect the spread of the virus. The
only thing is that vaccinated people are still slightly less likely
to get infected. In this study, the difference was 23%.
The Lancet magazine (https://bit.ly/2Zzbeo5) reports that there were
469 new infections in Massachusetts in July 2021. At the same time,
346 cases, that is, 74%, occurred in people who received two
vaccines. According to the Portuguese Health Institute named after
Ricardo Jorge, it became known (https://bit.ly/3I5pKVM) that more
vaccinated citizens than unvaccinated people died from COVID-19
in the country over the past week. Of all those who died, 80% were
vaccinated.