Covid-19: Delta infections threaten herd immunity vaccine strategy

@article{Dyer2021Covid19DI,
  title={Covid-19: Delta infections threaten herd immunity vaccine strategy},
  author={Owen Dyer},
  journal={BMJ},
  year={2021},
  volume={374}
}
  • O. Dyer
  • Published 2 August 2021
  • Medicine
  • BMJ
TheCDCpublished theProvincetowndata on 30 July, but a slide presentation mentioning the findings on viral loadwasobtained in advanceby theWashington Post.2 Epidemiologists who were shown these findings told the newspaper that they changed the calculus going forward. “I finished reading it significantly more concerned than when I began,” said Robert Wachter, chairman of the Department of Medicine at the University of California at San Francisco. 

Fall 2021 Update

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  • Medicine
    Journal of Christian nursing : a quarterly publication of Nurses Christian Fellowship
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A gradual reduction in nAb titers over time with a significant decrease from 6 to 9 months post-COVID-19 infection is demonstrated, and maintaining protective neutralizing antibodies regardless of sex, age, or disease severity is needed.

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CO VID-19 risk perception and certain sociodemographic characteristics were found to be significantly associated with vaccine acceptance and policymakers are recommended to develop public educational campaigns to enhance people’s trust in and willingness to take the COVID-19 vaccine.

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References

Outbreak of SARS-CoV-2 Infections, Including COVID-19 Vaccine Breakthrough Infections, Associated with Large Public Gatherings — Barnstable County, Massachusetts, July 2021

Findings from this investigation suggest that even jurisdictions without substantial or high COVID-19 transmission might consider expanding prevention strategies, including masking in indoor public settings regardless of vaccination status, given the potential risk of infection during attendance at large public gatherings that include travelers from many areas with differing levels of transmission.