Cohort profile: A Québec-based plasma donor biobank to study COVID-19 immunity (PlasCoV).
BMJ Open
; 13(2): e068803, 2023 02 23.
Статья
в английский
| MEDLINE | ID: covidwho-2260435
ABSTRACT
PURPOSE:
The long-term humoral immunity to COVID-19 is not well understood owing to the continuous emergence of new variants of concern, the evolving vaccine-induced and infection-induced immunity, and the limited duration of follow-up in previous studies. As the sole blood service in Québec (Canada), Héma-Québec established a COVID-19-focused biobank ('PlasCoV') in April 2021.PARTICIPANTS:
As of January 2022, the biobank included 86 483 plasma samples from 15 502 regular donors (age range=18-84 years, females=49.7%), for an average of 5.6 donations per donor. Nearly two-thirds (65.6%) of biobank donors made at least two donations, with many donors having provided samples prevaccination and postvaccination (3061 (19.7%)) or preinfection and postinfection (131 (0.8%)), thus allowing for longitudinal studies on vaccine-induced and infection-induced immunity. FINDINGS TO DATE A study that used PlasCoV samples revealed that previously infected individuals who received a single dose of the BNT162b2 COVID-19 vaccine exhibited the strongest immune response. By contrast, SARS-CoV-2-naïve individuals required two vaccine doses to produce a maximal immune response. Furthermore, the results of a four-phase seroprevalence study indicated that the antinucleocapsid (N) response wanes rapidly, so that up to one-third of previously infected donors were seronegative for anti-N. FUTURE PLANS Donations from individuals who consented to participate before 1 October 2022 will be collected up until 31 March 2023. This plasma biobank will facilitate the conduct of longitudinal studies on COVID-19 immunity, thus helping to provide valuable insights into the anti-SARS-CoV-2 immune response and its persistence, and the effects of vaccination and variants on the specificity of the anti-SARS-CoV-2 immune response.ключевые слова
Полный текст:
Имеется в наличии
Коллекция:
Международные базы данных
база данных:
MEDLINE
Основная тема:
COVID-19 Vaccines
/
COVID-19
Тип исследования:
Когортное исследование
/
Наблюдательное исследование
/
Прогностическое исследование
Темы:
Вакцина
/
Варианты
Пределы темы:
Подростки
/
Взрослые
/
Пожилые
/
Женщины
/
Люди
/
Мужчины
/
Middle aged
/
Молодой взрослый
Страна как тема:
Северная Америка
Язык:
английский
Журнал:
BMJ Open
Год:
2023
Тип:
Статья
Аффилированная страна:
Bmjopen-2022-068803
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