{"title":"COVID-19 接种前和接种后的平台试验(PICOBOO):对 50-<70 岁年龄段的 AZD1222 接种者接种不同 COVID-19 疫苗作为第二针加强剂(第四针)的免疫原性、反应原性和安全性。","authors":"","doi":"10.1016/j.jinf.2024.106286","DOIUrl":null,"url":null,"abstract":"<div><h3>Objectives</h3><div>PICOBOO is a randomised, adaptive trial evaluating the immunogenicity, reactogenicity, and safety of COVID-19 booster strategies. We report data for second boosters among individuals 50-<70 years old primed with AZD1222 (50-<70y-AZD1222) until Day 84.</div></div><div><h3>Methods</h3><div>Immunocompetent adults who received any first booster ≥three months prior were eligible. Participants were randomly allocated to BNT162b2, mRNA-1273 or NVX-CoV2373 1:1:1. The concentrations of ancestral anti-spike immunoglobulin were summarised as the geometric mean concentrations (GMC). Reactogenicity and safety outcomes were captured. Additional analyses including neutralising antibodies were performed on a subset. ACTRN12622000238774.</div></div><div><h3>Results</h3><div>Between Mar 2022 and Aug 2023, 743 participants were recruited and had D28 samples; 155 belonged to the 50-<70y-AZD1222 stratum. The mean adjusted GMCs (95% credible intervals) were 20,690 (17 555−23 883), 23,867 (20 144−27 604) and 8654 (7267−9962) U/mL at D28 following boosting with BNT162b2, mRNA-1273 and NVX-CoV2372, respectively, and 10,976 (8826−13 196), 15,779 (12 512−19 070) and 6559 (5220−7937) U/mL by D84. IgG against Omicron BA.5 was 2.7–2.9 times lower than the ancestral strain. Limited neutralisation against Omicron subvariants was found following all vaccines. Severe reactogenicity events were <4%.</div></div><div><h3>Conclusions</h3><div>All vaccines were immunogenic with more rapid waning after mRNA vaccines. These data support boosting with vaccines with greater specificity for circulating Omicron subvariants.</div></div>","PeriodicalId":50180,"journal":{"name":"Journal of Infection","volume":null,"pages":null},"PeriodicalIF":14.3000,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"The Platform Trial In COVID-19 Priming and BOOsting (PICOBOO): The immunogenicity, reactogenicity, and safety of different COVID-19 vaccinations administered as a second booster (fourth dose) in AZD1222 primed individuals aged 50-<70 years old\",\"authors\":\"\",\"doi\":\"10.1016/j.jinf.2024.106286\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><h3>Objectives</h3><div>PICOBOO is a randomised, adaptive trial evaluating the immunogenicity, reactogenicity, and safety of COVID-19 booster strategies. We report data for second boosters among individuals 50-<70 years old primed with AZD1222 (50-<70y-AZD1222) until Day 84.</div></div><div><h3>Methods</h3><div>Immunocompetent adults who received any first booster ≥three months prior were eligible. Participants were randomly allocated to BNT162b2, mRNA-1273 or NVX-CoV2373 1:1:1. The concentrations of ancestral anti-spike immunoglobulin were summarised as the geometric mean concentrations (GMC). Reactogenicity and safety outcomes were captured. Additional analyses including neutralising antibodies were performed on a subset. ACTRN12622000238774.</div></div><div><h3>Results</h3><div>Between Mar 2022 and Aug 2023, 743 participants were recruited and had D28 samples; 155 belonged to the 50-<70y-AZD1222 stratum. The mean adjusted GMCs (95% credible intervals) were 20,690 (17 555−23 883), 23,867 (20 144−27 604) and 8654 (7267−9962) U/mL at D28 following boosting with BNT162b2, mRNA-1273 and NVX-CoV2372, respectively, and 10,976 (8826−13 196), 15,779 (12 512−19 070) and 6559 (5220−7937) U/mL by D84. IgG against Omicron BA.5 was 2.7–2.9 times lower than the ancestral strain. Limited neutralisation against Omicron subvariants was found following all vaccines. Severe reactogenicity events were <4%.</div></div><div><h3>Conclusions</h3><div>All vaccines were immunogenic with more rapid waning after mRNA vaccines. These data support boosting with vaccines with greater specificity for circulating Omicron subvariants.</div></div>\",\"PeriodicalId\":50180,\"journal\":{\"name\":\"Journal of Infection\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":14.3000,\"publicationDate\":\"2024-09-26\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Infection\",\"FirstCategoryId\":\"3\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0163445324002202\",\"RegionNum\":1,\"RegionCategory\":\"医学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"INFECTIOUS DISEASES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Infection","FirstCategoryId":"3","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0163445324002202","RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"INFECTIOUS DISEASES","Score":null,"Total":0}
The Platform Trial In COVID-19 Priming and BOOsting (PICOBOO): The immunogenicity, reactogenicity, and safety of different COVID-19 vaccinations administered as a second booster (fourth dose) in AZD1222 primed individuals aged 50-<70 years old
Objectives
PICOBOO is a randomised, adaptive trial evaluating the immunogenicity, reactogenicity, and safety of COVID-19 booster strategies. We report data for second boosters among individuals 50-<70 years old primed with AZD1222 (50-<70y-AZD1222) until Day 84.
Methods
Immunocompetent adults who received any first booster ≥three months prior were eligible. Participants were randomly allocated to BNT162b2, mRNA-1273 or NVX-CoV2373 1:1:1. The concentrations of ancestral anti-spike immunoglobulin were summarised as the geometric mean concentrations (GMC). Reactogenicity and safety outcomes were captured. Additional analyses including neutralising antibodies were performed on a subset. ACTRN12622000238774.
Results
Between Mar 2022 and Aug 2023, 743 participants were recruited and had D28 samples; 155 belonged to the 50-<70y-AZD1222 stratum. The mean adjusted GMCs (95% credible intervals) were 20,690 (17 555−23 883), 23,867 (20 144−27 604) and 8654 (7267−9962) U/mL at D28 following boosting with BNT162b2, mRNA-1273 and NVX-CoV2372, respectively, and 10,976 (8826−13 196), 15,779 (12 512−19 070) and 6559 (5220−7937) U/mL by D84. IgG against Omicron BA.5 was 2.7–2.9 times lower than the ancestral strain. Limited neutralisation against Omicron subvariants was found following all vaccines. Severe reactogenicity events were <4%.
Conclusions
All vaccines were immunogenic with more rapid waning after mRNA vaccines. These data support boosting with vaccines with greater specificity for circulating Omicron subvariants.
期刊介绍:
The Journal of Infection publishes original papers on all aspects of infection - clinical, microbiological and epidemiological. The Journal seeks to bring together knowledge from all specialties involved in infection research and clinical practice, and present the best work in the ever-changing field of infection.
Each issue brings you Editorials that describe current or controversial topics of interest, high quality Reviews to keep you in touch with the latest developments in specific fields of interest, an Epidemiology section reporting studies in the hospital and the general community, and a lively correspondence section.