2023年2月16日 · Since January 2021, several studies and reviews have reported the effectiveness of past COVID-19 infection in reducing the risk of reinfection and how immunity wanes over time. But none has comprehensively assessed how long the protection after natural infection will last and how durable that protection will be against different variants.

9 小时之前 · Background: COVID-19 vaccinations reduced disease severity but their efficacy differed especially in limiting emerging SARS-CoV-2 variants. There is little data ... Comparative Study of Humoral Immunity Against SARS-CoV-2 Induced by Different COVID-19 Vaccine Types: Insights into Protection Against Wild-Type, Delta and JN.1 Omicron Strains.

2023年2月16日 · Immunity acquired from a Covid infection provides strong, lasting protection against the most severe outcomes of the illness, according to research published Thursday in The Lancet —...

2023年2月16日 · For at least 10 months after a Covid-19 infection, your immune system can provide good protection against symptomatic illness the next time around, a new study found, and the risk of severe...

Two teams, in North America and the UK, recently published studies in Science demonstrating that a single dose of an mRNA vaccine substantially enhances the immune response to SARS-CoV-2 variants among patients with a prior infection—a phenomenon some are calling “ hybrid immunity.” What About the Delta Variant?

2022年5月25日 · Infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) provides natural immunity against reinfection. Recent studies have shown waning of the immunity provided by the...

2023年3月11日 · Our findings show that immunity from COVID-19 infection confers substantial protection against infection from pre-omicron variants. By comparison, protection against re-infection from the omicron BA.1 variant was substantially reduced and wanes rapidly over time.

2020年11月1日 · This review presents a brief overview of the immune system regarding its protection of the human body from COVID-19; illustrates the process of the immune system, how it works, and its mechanism to fight virus; and presents information on the most recent COVID-19 treatments and experimental data.

2023年5月23日 · Real-life evidence has consistently shown that both natural immunity acquired after SARS-CoV-2 infection [1], [2], [3], [4] and induced immunity acquired by anti-COVID-19 vaccines [5] have protective action against SARS-CoV-2 infection.

As of summer 2022, it is estimated that over 500 million people have been infected with SARS‐CoV‐2, and over 6 million people have died of COVID‐19. 1 Yet in the midst of this overwhelming human tragedy, the SARS‐CoV‐2 pandemic has provided an unprecedented opportunity to study immune responses to a novel pathogen, its variants, and ...