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By June, almost half of Australians were recently infected with COVID-19.

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By early June, at least 46% of Australia’s adult population had been infected with SARS-CoV-2, the virus that causes COVID-19, according to results released today from the latest serologic survey of antibodies to the Australian virus. It is estimated. As a blood donor.

The second serum survey of this year’s four-round series will be conducted by UNSW Sydney’s Kirby Institute and the National Center for Immunology Research and Surveillance (NCIRS) in collaboration with the Victorian Infectious Disease Reference of the Royal Melbourne Hospital, Australian Red Cross Life Blood. did. Doherty Institute, NSW Health Pathology Institute of Clinical Pathology and Medical Research (ICPMR), Westmead and other research partner laboratories.

The prevalence of 46.2% is almost three times higher than reported in the previous survey, which estimated that about 17% of Australia’s population was infected by late February.

“We know that many viruses are widespread in the community, but some people experience only mild symptoms and others do not, so we need to know how many people are infected. You can’t just rely on tests. There are always tests to detect the virus, and rapid infestation is frequently used, but not always reported, “says Dorothy of the Kirby Institute.・ Dr. Machalek said.

“These serum studies are created when the body’s immune system responds to an infection and measure antibodies against the virus that will continue to exist for months, so it gives a more complete picture of how much COVID-19 is present. To do.”

Evidence of past infections was highest for donors aged 18-29 years at 61.7%, but diminished as age increased to 25.7% for donors aged 70-89 in Victoria, New South Wales, Queensland and Western Australia. Did. In Washington, evidence of past infections by blood donors surged from 0.5% to 37.5% in three months.

Researchers examined 5,139 anonymized samples from Australian blood donors aged 18-89 years for evidence of COVID-19-related antibodies. We tested two antibodies against SARS-CoV-2. Antibodies to the viral nucleocapsid protein show signs of infection in the past few months, and antibodies to the peplomer may indicate past infections and / or vaccinations. The Blood sample Collected between June 9-18, 2022.

Researchers have stated that the best preventive measure against serious illness with COVID-19 is to keep vaccinations and boosters up-to-date, in line with current recommendations.

“Australia’s COVID-19 epidemic reveals a new variant of the Omicron version of the virus that can lead to reinfection in people infected with previous variants,” said Professor Christine McCartney, director of NCIRS. Says. A professor at the University of Sydney who is a researcher in the serum research program. “Vaccination reduces the risk of serious illness when infected with COVID-19, whether it is a first-time or repeated infection.”

“The data collected from these studies are important to inform us of our pandemic response,” said Professor Paul Kelly, Chief Medical Officer of Australia.

How is the serum survey conducted?

Ongoing blood donor A study led by the Kirby Institute and NCIRS in collaboration with the Australian Red Cross Life Blood also included researchers at the Doherty Institute at the University of Sydney and the Victorian Infectious Disease Reference Institute at the NSW Institute for Health Pathology and Clinical Pathology (ICPMR). I am joining. Murdoch Children’s Research Institute.

The remaining blood donation samples used in the study were taken from Lifeblood processing centers nationwide and separated from identification information other than age, gender, and zip code. Therefore, individual results cannot be reverted to. Blood donor..

“Australian Red Cross Life Blood encourages anyone who wants to contribute to this kind of research to be a regular donor. Donating includes many things, including knowing you. There are advantages. blood “Type,” said Professor David Irving, Director of Research and Development at the Australian Red Cross Lifeblood.

The next (third) 2022 round of the Life Blood Donor Survey will begin around the end of August. The data will be provided to all state, quasi-state, and federal governments under COVID-19’s Australian National Disease Surveillance Program.


Australia COVID-19 more than reported


Quote: By June, nearly half of Australians recently acquired COVID-19 (July 27, 2022) from https://medicalxpress.com/news/2022-07-june-aussies-covid-.html did.

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By June, almost half of Australians were recently infected with COVID-19.

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