Medical Health Cluster


Immune System Memory Persists a Year After COVID-19

A year after infection with the coronavirus, when antibodies in the blood are barely detectable, the immune system continues to “remember” the virus and should respond to some extent upon re-encountering it, a study from China suggests. Researchers studied 141 people infected with the virus in the first half of […]

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Vaccinated Nursing Home Residents Not Immune to COVID Outbreaks

French study adds evidence about vaccine efficacy in challenging population A recent outbreak of COVID-19 at a French nursing home shows that even fully vaccinated residents remain vulnerable to illness, according to researchers. Among 74 residents, 23% contracted SARS-CoV-2, including 14 of the 70 who were fully vaccinated, two partially […]

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Immune responses against SARS-CoV-2 variants after heterologous and homologous ChAdOx1 nCoV-19/BNT162b2 vaccination

Abstract Currently approved viral vector-based and mRNA-based vaccine approaches against coronavirus disease 2019 (COVID-19) consider only homologous prime-boost vaccination. After reports of thromboembolic events, several European governments recommended using AstraZeneca’s ChAdOx1-nCov-19 (ChAd) only in individuals older than 60 years, leaving millions of already ChAd-primed individuals with the decision to receive […]

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CHAPEL HILL, NC, USA, (April 20, 2021) – As a complement to its recent statement on blood clots associated with COVID-19 vaccination, the International Society on Thrombosis and Haemostasis (ISTH) has issued interim guidance for the diagnosis and treatment of vaccine-induced immune thrombotic thrombocytopenia (VITT). This guidance, which builds upon the work […]

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‘Strong Immune Response’ From One Dose of Pfizer Vaccine: Study

People previously infected with SARS-CoV-2 showed higher antibody and T-cell responses after one dose of Pfizer’s BNT162b2 messenger (mRNA) vaccine compared with people who had a first dose without previously contracting the virus, according to research led by the universities of Sheffield and Oxford. The early findings from the Protective […]

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