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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…
prevviral
3 september 2021
Blog

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…
prevviral
3 september 2021
Blog

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…
prevviral
29 april 2021
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