Nat. Immunity Prevents Delta Better Than Vaccine
By Michelle Fay Cortez August 27, 2021, 1:38 AM EDT BLOOMBERG Early data from Israel shows natural immunity wanes with time People who recovered from Covid may face lower risk from delta People who recovered from a bout of Covid-19 during one of the earlier waves of the pandemic appear to have a lower risk…Read More
Persistence of neutralizing antibodies a year after SARS-CoV-2 infection
View ORCID ProfileAnu Haveri, Nina Ekström, Anna Solastie, Camilla Virta, Pamela Österlund, Elina Isosaari, Hanna Nohynek, Arto A. Palmu, Merit Melin doi: https://doi.org/10.1101/2021.07.13.21260426 This article is a preprint and has not been peer-reviewed [what does this mean?]. It reports new medical research that has yet to be evaluated and so should not be used to…Read More
Natural infection vs vaccination: Which gives more protection?
Nearly 40% of new COVID patients were vaccinated – compared to just 1% who had been infected previously. David Rosenberg , Jul 13 , 2021 9:24 AM Coronavirus patients who recovered from the virus were far less likely to become infected during the latest wave of the pandemic than people who were vaccinated against COVID,…Read More
SARS-CoV-2 infection induces long-lived bone marrow plasma cells in humans
Published: 24 May 2021 Abstract Long-lived bone marrow plasma cells (BMPCs) are a persistent and essential source of protective antibodies1,2,3,4,5,6,7. Individuals who have recovered from COVID-19 have a substantially lower risk of reinfection with SARS-CoV-28,9,10. Nonetheless, it has been reported that levels of anti-SARS-CoV-2 serum antibodies decrease rapidly in the first few months after…Read More
Had COVID? You’ll probably make antibodies for a lifetime
26 May 2021 Correction 27 May 2021 People who recover from mild COVID-19 have bone-marrow cells that can churn out antibodies for decades, although viral variants could dampen some of the protection they offer. Many people who have been infected with SARS-CoV-2 will probably make antibodies against the virus for most of their lives. So…Read More
Covid-19: Do many people have pre-existing immunity?
It seemed a truth universally acknowledged that the human population had no pre-existing immunity to SARS-CoV-2, but is that actually the case? Peter Doshi explores the emerging research on immunological responses Even in local areas that have experienced some of the greatest rises in excess deaths during the covid-19 pandemic, serological surveys since the peak…Read More
Lasting immunity found after recovery from COVID-19
After people recover from infection with a virus, the immune system retains a memory of it. Immune cells and proteins that circulate in the body can recognize and kill the pathogen if it’s encountered again, protecting against disease and reducing illness severity. This long-term immune protection involves several components. Antibodies—proteins that circulate in the blood—recognize…Read More
Recovered Covid-19 immunity likely lasts for years
by Neel V. Patel January 6, 2021 Covid-19 patients who recovered from the disease still have robust immunity from the coronavirus eight months after infection, according to a new study. The result is an encouraging sign that the authors interpret to mean immunity to the virus probably lasts for many years, and it should alleviate…Read More