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Two-Year Prospective Study of the Humoral Immune Response of Patients with Severe Acute Respiratory Syndrome

Identifieur interne : 000309 ( France/Analysis ); précédent : 000308; suivant : 000310

Two-Year Prospective Study of the Humoral Immune Response of Patients with Severe Acute Respiratory Syndrome

Auteurs : Wei Liu ; Arnaud Fontanet [France] ; Pan-He Zhang ; Lin Zhan ; Zhong-Tao Xin [République populaire de Chine] ; Laurence Baril [France] ; Fang Tang ; Hui Lv ; Wu-Chun Cao

Source :

RBID : ISTEX:DE3BBF473504ED5098E72D64D5DEBF6212E3CC8E

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English descriptors

Abstract

In a cohort study of 56 convalescent patients with severe acute respiratory syndrome (SARS), titers of immunoglobulin G (IgG) antibodies and neutralizing antibodies (NAbs) against SARS-associated coronavirus were assessed at regular intervals (at 1, 4, 7, 10, 16, and 24 months after the onset of disease) by use of enzyme-linked immunosorbent assay and neutralization assay. IgG antibody and NAb titers were highly correlated, peaking at month 4 after the onset of disease and decreasing thereafter. IgG antibodies remained detectable in all patients until month 16, and they became undetectable in 11.8% of patients at month 24. The finding that NAbs remained detectable throughout follow-up is reassuring in terms of protection provided against reinfection; however, NAb titers decreased markedly after month 16

Url:
DOI: 10.1086/500469


Affiliations:


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ISTEX:DE3BBF473504ED5098E72D64D5DEBF6212E3CC8E

Le document en format XML

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<div type="abstract">In a cohort study of 56 convalescent patients with severe acute respiratory syndrome (SARS), titers of immunoglobulin G (IgG) antibodies and neutralizing antibodies (NAbs) against SARS-associated coronavirus were assessed at regular intervals (at 1, 4, 7, 10, 16, and 24 months after the onset of disease) by use of enzyme-linked immunosorbent assay and neutralization assay. IgG antibody and NAb titers were highly correlated, peaking at month 4 after the onset of disease and decreasing thereafter. IgG antibodies remained detectable in all patients until month 16, and they became undetectable in 11.8% of patients at month 24. The finding that NAbs remained detectable throughout follow-up is reassuring in terms of protection provided against reinfection; however, NAb titers decreased markedly after month 16</div>
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