Persistence of Antibodies to Severe Acute Respiratory Syndrome Coronavirus 2 in Relation to Symptoms in a Nationwide Prospective Study.
Clin Infect Dis
; 73(12): 2155-2162, 2021 12 16.
Статья
в английский
| MEDLINE | ID: covidwho-1592795
ABSTRACT
BACKGROUND:
Assessing the duration of immunity following infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a first priority to gauge the degree of protection following infection. Such knowledge is lacking, especially in the general population. Here, we studied changes in immunoglobulin isotype seropositivity and immunoglobulin G (IgG) binding strength of SARS-CoV-2-specific serum antibodies up to 7 months following onset of symptoms in a nationwide sample.METHODS:
Participants from a prospective representative serological study in the Netherlands were included based on IgG seroconversion to the spike S1 protein of SARS-CoV-2 (Nâ =â 353), with up to 3 consecutive serum samples per seroconverted participant (Nâ =â 738). Immunoglobulin M (IgM), immunoglobulin A (IgA), and IgG antibody concentrations to S1, and increase in IgG avidity in relation to time since onset of disease symptoms, were determined.RESULTS:
While SARS-CoV-2-specific IgM and IgA antibodies declined rapidly after the first month after disease onset, specific IgG was still present in 92% (95% confidence interval [CI], 89%-95%) of the participants after 7 months. The estimated 2-fold decrease of IgG antibodies was 158 days (95% CI, 136-189 days). Concentrations were sustained better in persons reporting significant symptoms compared to asymptomatic persons or those with mild upper respiratory complaints only. Similarly, avidity of IgG antibodies for symptomatic persons showed a steeper increase over time compared with persons with mild or no symptoms (Pâ =â .022).CONCLUSIONS:
SARS-CoV-2-specific IgG antibodies persist and show increasing avidity over time, indicative of underlying immune maturation. These data support development of immune memory against SARS-CoV-2, providing insight into protection of the general unvaccinated part of the population. CLINICAL TRIALS REGISTRATION NL8473 (the Dutch trial registry).ключевые слова
Полный текст:
Имеется в наличии
Коллекция:
Международные базы данных
база данных:
MEDLINE
Основная тема:
SARS-CoV-2
/
COVID-19
Тип исследования:
Когортное исследование
/
Наблюдательное исследование
/
Прогностическое исследование
/
Рандомизированные контролируемые испытания
Темы:
Длинный Ковид
Пределы темы:
Люди
Страна как тема:
Европа
Язык:
английский
Журнал:
Clin Infect Dis
Тематика журнала:
Инфекционные болезни
Год:
2021
Тип:
Статья
Аффилированная страна:
Cid
Документы, близкие по теме
MEDLINE
...
LILACS
LIS