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Limited Impact of Delta Variant's Mutations on the Effectiveness of Neutralization Conferred by Natural Infection or COVID-19 Vaccines in a Latino Population.
Sariol, Carlos A; Serrano-Collazo, Crisanta; Ortiz, Edwin J; Pantoja, Petraleigh; Cruz, Lorna; Arana, Teresa; Atehortua, Dianne; Pabon-Carrero, Christina; Espino, Ana M.
  • Sariol CA; Department of Microbiology and Medical Zoology, University of Puerto Rico-Medical Sciences Campus, San Juan, PR 00936, USA.
  • Serrano-Collazo C; Unit of Comparative Medicine, University of Puerto Rico-Medical Sciences Campus, San Juan, PR 00936, USA.
  • Ortiz EJ; Department of Internal Medicine, University of Puerto Rico-Medical Sciences Campus, San Juan, PR 00936, USA.
  • Pantoja P; Unit of Comparative Medicine, University of Puerto Rico-Medical Sciences Campus, San Juan, PR 00936, USA.
  • Cruz L; Unit of Comparative Medicine, University of Puerto Rico-Medical Sciences Campus, San Juan, PR 00936, USA.
  • Arana T; Puerto Rico Science, Technology and Research Trust, San Juan, PR 00927, USA.
  • Atehortua D; Unit of Comparative Medicine, University of Puerto Rico-Medical Sciences Campus, San Juan, PR 00936, USA.
  • Pabon-Carrero C; Department of Microbiology and Medical Zoology, University of Puerto Rico-Medical Sciences Campus, San Juan, PR 00936, USA.
  • Espino AM; Unit of Comparative Medicine, University of Puerto Rico-Medical Sciences Campus, San Juan, PR 00936, USA.
Viruses ; 13(12)2021 11 30.
Article in English | MEDLINE | ID: covidwho-1566684
Preprint
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ABSTRACT
The SARS-CoV-2 pandemic has impacted public health systems all over the world. The Delta variant seems to possess enhanced transmissibility, but no clear evidence suggests it has increased virulence. Our data show that pre-exposed individuals had similar neutralizing activity against the authentic COVID-19 strain and the Delta and Epsilon variants. After only one vaccine dose, the neutralization capacity expanded to all tested variants in pre-exposed individuals. Healthy vaccinated individuals showed a limited breadth of neutralization. One vaccine dose did induce similar neutralizing antibodies against the Delta as against the authentic strain. However, even after two doses, this capacity only expanded to the Epsilon variant.
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Full text: Available Collection: International databases Database: MEDLINE Main subject: Antibodies, Neutralizing / COVID-19 Vaccines / SARS-CoV-2 / COVID-19 / Antibodies, Viral Type of study: Experimental Studies Topics: Vaccines / Variants Limits: Humans Country/Region as subject: Caribbean / Puerto Rico Language: English Year: 2021 Document Type: Article Affiliation country: V13122405

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Full text: Available Collection: International databases Database: MEDLINE Main subject: Antibodies, Neutralizing / COVID-19 Vaccines / SARS-CoV-2 / COVID-19 / Antibodies, Viral Type of study: Experimental Studies Topics: Vaccines / Variants Limits: Humans Country/Region as subject: Caribbean / Puerto Rico Language: English Year: 2021 Document Type: Article Affiliation country: V13122405