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Delta Infection After Vaccination Elicits Potent Neutralizing Immunity Against Severe Acute Respiratory Syndrome Coronavirus 2 Omicron.
Zhu, Ka-Li; Gao, Hui-Xia; Yao, Lin; Rong, Jun; Yang, Li; Zhang, Zhi; Jiang, Ping; Duan, Li-Jun; Wang, Guo-Lin; Dai, Er-Hei; Ma, Mai-Juan.
  • Zhu KL; Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, China.
  • Gao HX; State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China.
  • Yao L; The Fifth Hospital of Shijiazhuang, Hebei Medical University, Shijiazhuang, China.
  • Rong J; State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China.
  • Yang L; The Fifth Hospital of Shijiazhuang, Hebei Medical University, Shijiazhuang, China.
  • Zhang Z; The Fifth Hospital of Shijiazhuang, Hebei Medical University, Shijiazhuang, China.
  • Jiang P; The Fifth Hospital of Shijiazhuang, Hebei Medical University, Shijiazhuang, China.
  • Duan LJ; The Fifth Hospital of Shijiazhuang, Hebei Medical University, Shijiazhuang, China.
  • Wang GL; State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China.
  • Dai EH; State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China.
  • Ma MJ; The Fifth Hospital of Shijiazhuang, Hebei Medical University, Shijiazhuang, China.
J Infect Dis ; 226(9): 1551-1555, 2022 11 01.
Article in English | MEDLINE | ID: covidwho-1886442
ABSTRACT
The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) Omicron (B.1.1.529) variant extensively escape neutralizing antibodies by vaccines or infection. We assessed serum neutralizing activity in sera from Delta infection after vaccination and Delta infection only against SARS-CoV-2 Wuhan-Hu-1 (WA1), Beta, Delta, and Omicron. Sera from Delta infection only could neutralize WA1 and Delta but almost completely lost capacity to neutralize Beta and Omicron. However, Delta infection after vaccination resulted in a significant increase of serum neutralizing activity against WA1, Beta, and Omicron. This study demonstrates that breakthrough infection of Delta substantially induced high potency humoral immune response against the Omicron variant and other emerged variants.
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Full text: Available Collection: International databases Database: MEDLINE Main subject: Antibodies, Neutralizing / Immunity, Humoral / COVID-19 Vaccines / COVID-19 Topics: Vaccines / Variants Limits: Humans Language: English Journal: J Infect Dis Year: 2022 Document Type: Article Affiliation country: Infdis

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Full text: Available Collection: International databases Database: MEDLINE Main subject: Antibodies, Neutralizing / Immunity, Humoral / COVID-19 Vaccines / COVID-19 Topics: Vaccines / Variants Limits: Humans Language: English Journal: J Infect Dis Year: 2022 Document Type: Article Affiliation country: Infdis