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  • Coronavirus latest news2

    Tas tracing done from Brisbane hotel cluster

    All Tasmanian arrivals who completed their international quarantine at Brisbane's Grand Chancellor Hotel since December 30 have been tracked down by state health authorities. 14 travellers are in isolation and being tested again for coronavirus, despite…
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    Vic workplaces to return, mask rules eased -sharenews

    Victorian workers can start returning to offices from Monday as mask rules are also eased. But Premier Daniel Andrews says 18 people have returned to the state after they were quarantined in Brisbane's Grand Chancellor Hotel. They are being contacted and are…
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    Chief medic calms concerns about vaccine -sharenews

    Australia's chief medical officer has rejected calls to pause the rollout of the AstraZeneca vaccine, insisting it is completely effective in preventing serious illness and death from coronavirus. Some doctors are concerned about the vaccine's efficacy rate,…
  • Coronavirus latest news2

    NSW issues virus alert for Brisbane hotel -sharenews

    NSW has issued an alert for anyone who has been at the Hotel Grand Chancellor in Brisbane, fearing a highly contagious strain of coronavirus may have spread across the border. The quarantine hotel is linked to six cases of the UK variant of COVID-19 and has…
  • coronavirus update

    US coronavirus deaths hit new daily high -sharenews

    Coronavirus deaths in the US have hit another one-day high at more than 4300. The country's overall death toll from coronavirus has eclipsed 380,000, according to Johns Hopkins University. The US recorded 4327 deaths on Tuesday, with Arizona and California…
  • coronavirus update

    NSW still trying to link 14 COVID cases -sharenews

    Four weeks on from discovering the northern beaches outbreak, NSW Health is still trying to link 14 recent coronavirus cases to known clusters. Five locally-acquired coronavirus cases were reported on Tuesday in NSW from just under 15,000 tests. The origins…
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    Numbers cut on three repatriation flights -sharenews

    Australians stranded overseas have been dealt another blow, with passenger numbers halved on three repatriation flights because of new caps on international arrivals. There are also reports some commercial flights have been abruptly cancelled without…
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    Aust Open qualifying hit by coronavirus -sharenews

    American Denis Kudla has tested positive for COVID-19 at the Australian Open qualifying tournament in Doha and has been sent to a quarantine hotel. Fourth-seeded Kudla downed Moroccan Elliot Benchetrit 6-4 6-3 but the match ended in controversy. The positive…
  • Coronavirus latest news2

    Virus cases low as states clash on borders -sharenews

    Border closures have sparked fresh tensions between state governments after the end of Brisbane's mini-lockdown led to more travel restriction tweaks. A snap shutdown ended on Monday night after three days aimed at stopping a highly contagious coronavirus…
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    Victoria introduces new traffic light system for interstate travel

    Victoria will reopen to regional NSW, with the introduction of a new "traffic light" system for interstate travel. Permits designating regions in other parts of Australia green, orange or red zones depending on coronavirus risk were to go live from 6pm…
  • coronavirus update

    Some Brisbane arrivals free to leave isolation

    Anyone who arrived in Tasmania from Greater Brisbane prior to 9am on January 8th can now leave quarantine. "...because they have not been identified as a close or casual contact of the [original] case," Health Minister Sarah Courtney said on Monday afternoon.…
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    Vic premier flags Qld travel advice change -sharenews

    Victorian travellers to Queensland have been warned they might not be able to return home, as Brisbane locks down for three days. Premier Daniel Andrews says it likely won't be possible for Victorians to travel to or return from the sunshine state once the…
  • Coronavirus latest news2

    New border restrictions on travellers from Brisbane

    Tasmania is imposing new border restrictions on people entering from the Sunshine State's capital. The Queensland Government has announced a snap three-day lockdown of Greater Brisbane, after a hotel quarantine cleaner test positive for the new more…
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    Brisbane to enter 3 day lockdown

    Greater Brisbane will enter a hard lockdown from 6pm on Friday after a cleaner at a quarantine hotel was diagnosed with the highly contagious UK variant of COVID-19. Residents in the council areas of Brisbane, Logan, Ipswich, Moreton Bay and Redlands will be…
  • Coronavirus latest news2

    Vic virus clean sheet amid test blitz

    Victoria is still trying to identify the source of the state's first mystery COVID-19 case in more than two months, after recording no new infections. The state had no local, interstate or overseas acquired cases to report on Thursday - its first clean sheet…
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    Vic case attended Test, Boxing Day sales

    A Melbourne man infected with coronavirus attended the Boxing Day sales at Chadstone Shopping Centre and day two of the Australia-India cricket Test at the MCG. Just where the man acquired his infection is a mystery. Acting Premier Jacinta Allan said health…
  • Coronavirus latest news2

    SA unlikely to move on Vic, NSW borders

    South Australia's transition committee is set to meet again but is unlikely to change coronavirus border restrictions with NSW or Victoria. The committee will meet on Tuesday to consider the latest in the fight against growing COVID-19 clusters in both Sydney…
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    Victoria's Black Rock cluster grows to 24

    Victoria's Black Rock coronavirus cluster now has 24 cases, as long queues again confront returned interstate travellers at testing sites across Melbourne. Acting Premier Jacinta Allan confirmed all three locally acquired COVID-19 infections reported on…
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    Aussies won't be locked down for Christmas

    Most Australians won't be locked down over Christmas after the NSW government eased coronavirus restrictions in Sydney. NSW Premier Gladys Berejiklian says Sydneysiders will be allowed to host limited visitors over Christmas, after just eight new…
  • Coronavirus latest news2

    Victorian returns from NSW with COVID-19

    A person who returned to Victoria after visiting the epicentre of Sydney's coronavirus outbreak has tested positive for the illness. Their infection was acquired within the northern beaches area, Victoria's Department of Health and Human Services confirmed on…

COVID-19 victims maintain immunity -sharenews

coronavirus update

Australian researchers have discovered that patients who've been infected with COVID-19 retain immunity against the virus and the disease for at least eight months.

The research is the strongest evidence yet that vaccines against the virus will work for long periods.

Previous studies found the first wave of antibodies produced by the human body after infection waned after the first few months, raising concerns that people could quickly lose immunity.

The new research allays those concerns.

The study is the result of a collaboration led by Associate Professor Menno van Zelm, from Monash University and was published on Monday in the preprint server, MedRxiv.

The researchers found a specific cell within the human immune system, the memory B cell, "remembers" infection by the virus, and if challenged again, through re-exposure to the virus, triggers a protective immune response through rapid production of protective antibodies.

The researchers recruited 25 COVID-19 patients and took 36 blood samples between day four post-infection and day 242 post-infection.

As with other studies, looking at the antibody response, the researchers found that antibodies against the virus started to drop off after 20 days post-infection.

However, all patients continued to have memory B cells that recognised one of two components of the virus, the spike and nucleocapsid proteins.

These virus-specific memory B cells were present as long as eight months after infection.

Associate Professor van Zelm said the results gave hope to the efficacy of any vaccine against the virus and explained why there had been so few examples of genuine reinfection in the millions of people who had tested positive for the virus globally.

"These results are important because they show, definitively, that patients infected with the COVID-19 virus do in fact retain immunity against the virus and the disease," he said.

"This has been a black cloud hanging over the potential protection that could be provided by any COVID-19 vaccine and gives real hope that, once a vaccine or vaccines are developed, they will provide long-term protection."

© AAP 2020

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