According to a recent study published in the Lancet, those who have received a Covid vaccine are just as likely as the unvaccinated to transmit the Delta variant within a household setting. In addition, researchers uncovered that both the unvaccinated and the vaccinated had a similar viral load of the disease when infected, with 25% of vaccinated household contacts contracting the disease. The Hill has the story.
According to the study published in the Lancet Infectious Diseases journal, people who contracted Covid had a similar viral load regardless of whether they had been vaccinated. The study further found that 25% of vaccinated household contacts contracted Covid while 38% of unvaccinated individuals were diagnosed with the disease.
Researchers examined 621 symptomatic participants in the United Kingdom over a year.
“Although vaccines remain highly effective at preventing severe disease and deaths from Covid, our findings suggest that vaccination is not sufficient to prevent transmission of the Delta variant in household settings with prolonged exposures”, the study said.
In contrast, researchers noted that the vaccination was more effective at curbing transmission of the Alpha variant within the household, at between 40 and 50%.
“Increasing population immunity via booster programmes and vaccination of teenagers will help to increase the currently limited effect of vaccination on transmission, but our analysis suggests that direct protection of individuals at risk of severe outcomes, via vaccination and non-pharmacological interventions, will remain central to containing the burden of disease caused by the Delta variant”, the researchers wrote.
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