Tuesday, 21 September, 2021


Coronavirus: Can COVID-19 immunity last beyond six months for patients?

Immunization against COVID-19 could last years, study claims COVID-19: New Data Suggest 'Powerful and Long-Lasting' Coronavirus Immunity
Patty Aguilar | 20 November, 2020, 17:38

According to a new study, immunity to coronavirus might last years or even decades.

The study backs up what previous research has shown to date but adds the weight of being the longest and most comprehensive on the subject, the Times said.

"In this multicenter retrospective cohort study, 28% of 817 older patients with COVID-19 infection had delirium on arrival to the ED, and delirium was the sixth most common presenting symptom or sign overall", read the study, from lead authors Dr. Maura Kennedy of Massachusetts General Hospital and Harvard Medical School and Benjamin Helfand of the University of Massachusetts Medical School.

While there are multiple vaccines against the coronavirus being studied, with two showing efficacy of preventing the virus of at least 90%, scientists have questioned how long the public would remain immune and if repeat vaccines would be necessary in order to keep the pandemic in check. The researchers studied 185 men and women, ages 19 to 81, living in California and NY, who had recovered from COVID-19.

While the study is yet to be peer-reviewed, initial reports suggest that the immune pathology of COVID recovered patients is "well-equipped" to recognize and fight off any virus upon exposure in the future.

The new findings, the Times notes, appear to line up with another recent discovery that survivors of SARS, which was also caused by a coronavirus, still carry important immune cells 17 years after infection. Many do not; of those who do become sick, some experience mild symptoms and do not require hospitalization.

The researchers then followed whether staff who had been infected before had the same number of new Covid-19 infections as those who had not been infected before.

The experts found some patients still had Covid antibodies and the immune cells that make them six to eight months later. They found that antibodies "were durable" with only "modest declines" occurring at six to eight months, however observed that there was about a 200-fold range in the level of antibody responses among the adults.

Although antibodies in the blood are needed to block the virus and forestall a second infection - a condition known as sterilizing immunity - immune cells that "remember" the virus more often are responsible for preventing serious illness.

Prof Lawrence Young, from the University of Warwick, said: "The significant take home message is that the immune response to the virus is more long-lived than previously thought". And while there have been cases of reinfection, they seem to be rare, per the Times.

Speaking on BBC Radio 4's Today programme, he said: "We're really looking globally, we want to be able to get to every corner of the world if indeed the vaccine is shown to work". It can last longer as well even years when all the components body's immune memory are considered. Another study from researchers at the University of Washington indicates that immunity lasts for at least three months.

Recommended

loading...
...

Iconic Arecibo telescope in Puerto Rico will be decommissioned Iconic Arecibo telescope in Puerto Rico will be decommissioned It has been used by scientists to observe deep-space objects, including the first planet discovered outside of our solar system. The National Science Foundation says it is shutting down the Arecibo Observatory in Puerto Rico due to safety concerns.

Oxford COVID Vaccine Safe, Effective, Especially in Older Adults Oxford COVID Vaccine Safe, Effective, Especially in Older Adults The Phase III trials of the ChAdOx1 nCov-2019 vaccine are ongoing, with early efficacy readings possible in the coming weeks. Oxford scientists have worked in tandem with UK-based biopharmaceutical giant AstraZeneca on their vaccine.

Gordon Hayward has a call to make on future with Celtics Gordon Hayward has a call to make on future with Celtics Hayward's decision could come sooner rather than later with National Basketball Association free agency beginning on Friday. Boston Celtics wing Gordon Hayward will opt out of the final year of his deal, according to The Athletic's Shams Charania .

Toughest Covid-19 restrictions to be imposed across Scotland Toughest Covid-19 restrictions to be imposed across Scotland The regulations will also cover non-essential travel into a Level 3 or 4 local authority area, except for the same reasons.

COVID-19 cases in Calgary as of November 12 COVID-19 cases in Calgary as of November  12 Alberta has confirmed 773 new cases of COVID-19 and five additional deaths within the province. There are 268 people in hospital, up four from Monday, and 57 people are in intensive care.

Lionel Messi 'Tired Of Always Being The Problem' For Barcelona Lionel Messi 'Tired Of Always Being The Problem' For Barcelona As things stand, Messi will be able to negotiate a pre-contract with any club in January and can leave for free next June. The Argentinian was planning to leave Barcelona this summer after almost 20 years on the team.

Amazon Echo Frames smart glasses now available, Echo Loop smart ring dead Amazon Echo Frames smart glasses now available, Echo Loop smart ring dead They were announced as a "Day One" product, made in limited quantities and only available via a special invitation. Amazon says it's 50 percent more powerful than the previous-gen stick, which means faster streaming in Full HD.

First Trailer for Chaos Walking Released First Trailer for Chaos Walking Released It's taken them a long time to get this movie to the big screen, but it looks like it's finally coming (if COVID-19 will let it). Chaos Walking also features Mads Mikkelsen , Cynthia Erivo , Nick Jonas , David Oyelowo , Demián Bichir and Kurt Sutter .

Lil Wayne Charged by Feds with Possession of Firearm, Ammo Lil Wayne Charged by Feds with Possession of Firearm, Ammo In this case, Wayne reportedly did not use the gun in the commission of a forcible felony like firing it or brandishing it. He is barred by U.S. law from owning a gun, due to having a previous decade-old firearms conviction.

News Sharkboy And Lavagirl Are Again, Yet Fans Are Missing Taylor Lautner News Sharkboy And Lavagirl Are Again, Yet Fans Are Missing Taylor Lautner The film features an all-star cast, including Pedro Pascal , Christian Slater , Boyd Holbrook , and Priyanka Chopra. The images are also showing the daughter of the superheroes.

Russian Federation reports record high of daily COVID-19 cases Russian Federation  reports record high of daily COVID-19 cases This vaccine, which has been met with skepticism by outside scientists, has not yet been widely used. People wearing face masks walk on the street in Moscow, Russia, Nov. 19, 2020.

'Pipo fit die' as Trump no wan gree accept defeat - Joe Biden 'Pipo fit die' as Trump no wan gree accept defeat - Joe Biden When I asked about advice he'd give to those who will come after him, he got a bit testy: "I don't speak in hypotheticals". Georgia is conducting a statewide, by-hand recount because of the 0.3% margin separating the rivals.

Joe Biden Wins Georgia Joe Biden Wins Georgia On Thursday, Trump's legal team said the campaign dropped a court challenge in MI because the goal was achieved. Biden appears to have a 306-232 advantage in the Electoral College, where the voting is set for December 14.

Tokyo raises coronavirus alert to highest as cases set record Tokyo raises coronavirus alert to highest as cases set record Japan recorded its highest daily number of COVID-19 cases on Thursday - 2,259 new infections , according to broadcaster TBS. When the campaign began, in late July, Tokyo was excluded as it was in the midst of a sharp uptick in new infections .

Honda Civic Debuted on Twitch With a Host of Upgrades Honda Civic Debuted on Twitch With a Host of Upgrades The real 2022 Honda Civic likely won't show up until early next year before hitting dealerships shortly thereafter. We're not sure if the darker finish will carry over to production - at least, not on the base model.