Neutralizing antibody levels are highly predictive of immune protection from symptomatic SARS-CoV-2 infection

Predictive models of immune protection from COVID-19 are urgently needed to identify correlates of protection to assist in the future deployment of vaccines. To address this, we analyzed the relationship between in vitro neutralization levels and the observed protection from severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection using data from seven current vaccines and from convalescent cohorts. We estimated…

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A blood marker predicts who gets ‘breakthrough’ COVID

Real-world evidence from a medical centre links high levels of potent antibodies after vaccination to a reduced risk of infection. People fully vaccinated against COVID-19 are less likely to become infected with the coronavirus if they have relatively high levels of virus-blocking antibodies, according to a study of thousands of health-care workers who received the Pfizer–BioNTech jab1. The analysis adds…

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Virus viability matters!

Virus viability matters; wederom een interessante studie met betrekking tot antigeen testen (oa. Joysbio) over ‘vals negatieve’ resultaten en besmettelijkheid. Conclusie: de best scorende testen, waaronder Joysbio, pikken nagenoeg alle besmettelijke COVID-19 cases er tussen uit. Van het kleine aantal vals negatieve (in vergelijking met PCR) bevat ongeveer 90% geen ‘viable virus’ (niet besmettelijk). Joysbio scoort hier gevoeliger dan de…

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KNO-arts: Ervaring met zelf sneltesten op COVID-19

Naam: Martijn Kos Arts: KNO Arts & Somnoloog Ziekenhuis: Rode Kruis ziekenhuis Overig: Een vd oprichters van Ruysdael kliniek Eind december 2020 hebben wij gesproken met Martijn Kos, een ervaren KNO-arts en één van de oprichters van Ruysdael Clinics. Martijn heeft twee maanden geleden een antigeen sneltest kit van PrevViral ontvangen voor het gebruik in zijn kliniek. Uit nieuwsgierigheid test...
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NEW: COVID-19 antigen & antibody tests available

Best wishes to all of you in 2021! We start this year off with product news: NEW antigen and antibody tests are now available! PrevViral now also offers individually packaged CE-marked rapid antigen tests, from manufacturer JOYSBIO Biotechnology CO., LTD.. These tests are very easy-to-use, and less invasive than other tests since the swab can be inserted ca. 2.5 cm…

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Fluorecare antigen sneltest goedgekeurd in Curaçao!

De testen zijn gevalideerd in Curaçao in het Analytisch Diagnostisch Centrum (ADC). In deze validatie zijn de testen vergeleken met de Panbio van Abbot en met de PCR. Uit de bevonden resultaten kan men concluderen dat de SARS-CoV-2 Spike protein test kit van Fluorecare goed is bevonden voor het screenen van patiënten verdacht op COVID-19. Het verificatie rapport vindt u...
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PrevViral launches new official website!

PrevViral proudly announces the launch of their new website. With this, the first product that is offered is a COVID-19 Antigen Rapid Test Kit, under the product name Fluorecare ©. The product is manufactured in Shenzhen by the company Microprofit Biotech, which is a top player in developing high quality COVID-19 products. PrevViral plans to introduce more products, including a…

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Fast coronavirus tests: what they can and can’t do

In this Nature article, published in September 2020, the potential of rapid antigen test is described. The article discusses how to use rapid antigen tests, how they work, and the difference between PCR. Again, in this article it is stated that the PCR method also detects people who are not likely to spread the virus. It is commonly assumed that...
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Rethinking Covid-19 test sensitivity — A strategy for containment

Harvard professor Michael Mina illustrates in his article “Rethinking Covid-19 Test Sensitivity — A Strategy for Containment” how we should look at rapid testing, sensitivity and COVID-19 infectivity. It is fundamentally important to understand what different COVID-19 testing results actually mean. Do we want to detect genetic material of the novel SARS-CoV-2 virus? Then a test with a high analytic...
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