Yerevan, 08.December.2025,
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BREAKING


Почему риск повторного заражения коронавирусом у пожилых людей так высок?

SOCIETY

Иммунитет пожилых людей слабо отвечает при встрече с коронавирусом, поэтому риск повторного заражения у таких людей довольно высок. Такое мнение выразил вирусолог, руководитель лаборатории геномной инженерии МФТИ Павел Волчков (Россия).

По его словам, этот феномен, а также высокая смертность при COVID-19 среди пожилых пациентов, связаны со старением иммунной системы вместе со всем организмом. Так, адаптивный иммунитет человека, состоящий из B- и T-клеток, активно вырабатывается в детстве и юности, но с возрастом эта система начинает работать менее эффективно.

«В пожилом возрасте новые B- и T-клетки практически не формируются», — отметил ученый в беседе с «Известиями».

По словам специалиста, за выработку Т-клеток отвечает тимус (вилочковая железа). Со временем он рассасывается, а к 40-50 годам практически исчезает. Поэтому взрослые люди, и особенно пожилые, живут со сформированным в молодости набором T-клеток.

Вирусолог добавил, что иммунитет у пожилых способен реагировать на новые раздражители, но будет защищать уже не так эффективно. Поэтому для защиты пожилых людей их необходимо скорее вакцинировать, более того, вакцинировать специалист рекомендует и всех не переболевших.

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