ADC Letter for Infectious Disease Control
Online ISSN : 2424-0907
Print ISSN : 2189-5171
ISSN-L : 2189-5171
Special Report
Immunological aspects of COVID-19
Ryo Abe
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RESEARCH REPORT / TECHNICAL REPORT OPEN ACCESS

2021 Volume 8 Issue 1 Pages 13-24

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Abstract

Coronavirus (COVID-19) is currently sweeping the world, and at the time of the writing of this manuscript (December 20, 2020), 840,000 new cases are being confirmed every day. To date, the cumulative number of infected people is approaching 100 million and the death toll is in excess of 1.68 million. In Japan as well, the number of newly infected people was almost 3,000 for one day in December, and the third wave which has now arrived is exceeding the second wave seen in mid- August. A state of emergency now exists in Tokyo, Osaka and in some other areas. In this new coronavirus pandemic, aging and the use of immunosuppressants for organ transplantation and autoimmune diseases are cited as the main factors in the aggravation of symptoms and death by this disease, which has made it clear that the immune system plays a pivotal role in protection against this deadly virus. Furthermore, it has become evident that immune phenomena such as cytokine storms due to overproduction of inflammatory cytokines are deeply involved in the pathogenesis of COVID-19. Finally, vaccination has begun and will be the key to overcoming the continued spread of this pandemic of the new coronavirus infection. In this article, I would like to consider COVID-19 from an immunological point of view.

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