Serveur d'exploration MERS

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MERS-CoV Antibody Responses 1 Year after Symptom Onset, South Korea, 2015

Identifieur interne : 000D12 ( Main/Exploration ); précédent : 000D11; suivant : 000D13

MERS-CoV Antibody Responses 1 Year after Symptom Onset, South Korea, 2015

Auteurs : Pyoeng Gyun Choe ; R. A. P. M. Perera ; Wan Beom Park ; Kyoung-Ho Song ; Ji Hwan Bang ; Eu Suk Kim ; Hong Bin Kim ; Long Wei Ronald Ko ; Sang Won Park ; Nam-Joong Kim ; Eric H. Y. Lau ; Leo L. M. Poon ; Malik Peiris ; Myoung-Don Oh

Source :

RBID : PMC:5512479

Descripteurs français

English descriptors

Abstract

We investigated the kinetics of the Middle East respiratory syndrome coronavirus (MERS-CoV) neutralizing and spike protein antibody titers over the course of 1 year in 11 patients who were confirmed by reverse transcription PCR to have been infected during the outbreak in South Korea in 2015. Robust antibody responses were detected in all survivors who had severe disease; responses remained detectable, albeit with some waning, for <1 year. The duration of viral RNA detection (but not viral load) in sputum significantly correlated with the antibody response magnitude. The MERS S1 ELISA antibody titers correlated well with the neutralizing antibody response. Antibody titers in 4 of 6 patients who had mild illness were undetectable even though most had evidence of pneumonia. This finding implies that MERS-CoV seroepidemiologic studies markedly underestimate the extent of mild and asymptomatic infection. Obtaining convalescent-phase plasma with high antibody titers to treat MERS will be challenging.


Url:
DOI: 10.3201/eid2307.170310
PubMed: 28585916
PubMed Central: 5512479


Affiliations:


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<term>Coronavirus Infections (epidemiology)</term>
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<p>We investigated the kinetics of the Middle East respiratory syndrome coronavirus (MERS-CoV) neutralizing and spike protein antibody titers over the course of 1 year in 11 patients who were confirmed by reverse transcription PCR to have been infected during the outbreak in South Korea in 2015. Robust antibody responses were detected in all survivors who had severe disease; responses remained detectable, albeit with some waning, for
<underline><</underline>
1 year. The duration of viral RNA detection (but not viral load) in sputum significantly correlated with the antibody response magnitude. The MERS S1 ELISA antibody titers correlated well with the neutralizing antibody response. Antibody titers in 4 of 6 patients who had mild illness were undetectable even though most had evidence of pneumonia. This finding implies that MERS-CoV seroepidemiologic studies markedly underestimate the extent of mild and asymptomatic infection. Obtaining convalescent-phase plasma with high antibody titers to treat MERS will be challenging.</p>
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