Transmission potential of vaccinated and unvaccinated persons infected with the SARS-CoV-2 Delta variant in a federal prison, July-August 2021

被引:6
作者
Salvatore, Phillip P. [1 ,2 ]
Lee, Christine C. [1 ,3 ]
Sleweon, Sadia [1 ]
McCormick, David W. [1 ,2 ,4 ]
Nicolae, Lavinia [1 ]
Knipe, Kristen [1 ]
Dixon, Tom [5 ]
Banta, Robert [2 ,5 ]
Ogle, Isaac [2 ,5 ]
Young, Cristen [5 ]
Dusseau, Charles [2 ,5 ]
Salmonson, Shawn [5 ]
Ogden, Charles [2 ,5 ]
Godwin, Eric [5 ]
Ballom, TeCora [2 ,5 ]
Rhodes, Tara [2 ,5 ]
Wynn, Nhien Tran [1 ]
David, Ebenezer [1 ]
Bessey, Theresa K. [1 ]
Kim, Gimin [1 ]
Suppiah, Suganthi [1 ]
Tamin, Azaibi [1 ]
Harcourt, Jennifer L. [1 ]
Sheth, Mili [1 ]
Lowe, Luis [1 ]
Browne, Hannah [1 ]
Tate, Jacqueline E. [1 ,2 ]
Kirking, Hannah L. [1 ,2 ]
Hagan, Liesl M. [1 ]
机构
[1] CDCP, COVID 19 Pandem Response Team, Atlanta, GA 30333 USA
[2] US PHS, Rockville, MD 20857 USA
[3] CDCP, Lab Leadership Serv, Atlanta, GA USA
[4] CDCP, Epidem Intelligence Serv, Atlanta, GA USA
[5] US Dept Justice, Bur Prisons, Washington, DC USA
关键词
COVID-19; transmission; Vaccination; Virus shedding; Infectious disease outbreaks; Correctional facilities;
D O I
10.1016/j.vaccine.2022.11.045
中图分类号
R392 [医学免疫学]; Q939.91 [免疫学];
学科分类号
100102 ;
摘要
Background: The extent to which vaccinated persons who become infected with SARS-CoV-2 contribute to transmission is unclear. During a SARS-CoV-2 Delta variant outbreak among incarcerated persons with high vaccination rates in a federal prison, we assessed markers of viral shedding in vaccinated and unvac-cinated persons.Methods: Consenting incarcerated persons with confirmed SARS-CoV-2 infection provided mid-turbinate nasal specimens daily for 10 consecutive days and reported symptom data via questionnaire. Real-time reverse transcription-polymerase chain reaction (RT-PCR), viral whole genome sequencing, and viral cul-ture was performed on these nasal specimens. Duration of RT-PCR positivity and viral culture positivity was assessed using survival analysis.Results: A total of 957 specimens were provided by 93 participants, of whom 78 (84 %) were vaccinated and 17 (16 %) were unvaccinated. No significant differences were detected in duration of RT-PCR positiv-ity among vaccinated participants (median: 13 days) versus those unvaccinated (median: 13 days; p = 0.50), or in duration of culture positivity (medians: 5 days and 5 days; p = 0.29). Among vaccinated participants, overall duration of culture positivity was shorter among Moderna vaccine recipients versus Pfizer (p = 0.048) or Janssen (p = 0.003) vaccine recipients. In post-hoc analyses, Moderna vaccine recip-ients demonstrated significantly shorter duration of culture positivity compared to unvaccinated partic-ipants (p = 0.02). When restricted to participants without reported prior infection, the difference between Moderna vaccine recipients and unvaccinated participants was more pronounced (medians: 3 days and 6 days, p = 0.002).Conclusions: Infectious periods for vaccinated and unvaccinated persons who become infected with SARS-CoV-2 are similar and can be highly variable, though some vaccinated persons are likely infectious for shorter durations. These findings are critically important, especially in congregate settings where viral transmission can lead to large outbreaks. In such settings, clinicians and public health practitioners should consider vaccinated, infected persons to be no less infectious than unvaccinated, infected persons.Published by Elsevier Ltd.
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收藏
页码:1808 / 1818
页数:11
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