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Covid-19 Delta threatens the good results of vaccines to curb transmission
Lambda variants, the strain whose mutations are of more concern than Delta
The director of the Oxford Vaccine Center,
Andrew Pollard
, warned on Tuesday that achieving group immunity to the coronavirus "is not a possibility" once the Delta variant becomes dominant.
Pollard, who led the design of AstraZeneca's COVID-19 vaccine with immunologist Sarah Gilbert, told a parliamentary committee that
vaccination programs should not be based on the idea of achieving such "herd immunity
.
"
"We clearly know that with the current variant of the coronavirus, the Delta, (the virus) will continue to infect people who have been vaccinated, and that means that anyone who has not yet been vaccinated, at some point will encounter the virus," the scientist told the deputies.
He further stated that in the future "a variant could emerge that perhaps is even better transmitted between vaccinated populations", thus "that provides even more reasons not to revolve vaccination programs around group immunity."
Six months from now, Pollard thinks that a
"consolidation phase" in the fight against the virus
will take place in the United Kingdom
and that the covid will go from an "epidemic" to an "endemic" disease.
The public health agency of England (
NHS England
), published last week a report in which it warns that there are indications that "the levels of the virus in those vaccinated people who are infected with delta may be similar to those in detected in unvaccinated people ", which affects the ease of transmission of the pathogen.
Among nearly
1,500 patients hospitalized
with the delta variant in the UK since July 19,
55.1% were not vaccinated
, while
34.9% had received the full regimen
, that report noted.
According to the criteria of The Trust Project
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