According to epidemiologist Catherine Bennett, the clear correlation between booster vaccine doses and mortality is evidence of additional protection against serious illness and death.
The latest analysis in Australia shows that states with higher rates of improvement have significantly lower rates of COVID-19 deaths per capita.
Western Australia currently has the highest rate of booster vaccinations in Australia at 80.2%, followed by the Capital Region (ACT) at 79.3%, South Australia at 68.4%, Victoria at 68, 1%, New South Wales at 64.1% and Queensland at 58.1%.
From February 8 to now, the localities with the highest rate of reinforcements registered the lowest mortality rates.
The ACT has the lowest death rate of 11/100,000, while Western Australia’s death rate is 15/100,000, nearly half that of New South Wales and Victoria, the two states with the highest rates. . higher mortality. death is 27/100,000.
The states of South Australia and Queensland have mortality rates of 24/100,000 and 20/100,000, respectively.
According to Deakin University epidemiologist Catherine Bennett, the clear correlation between enhanced vaccine doses and mortality is testament to the potential for significant additional protection against serious morbidity and mortality. . with the third injection.
“It was one of the things we were looking forward to,” Professor Bennett said. The effectiveness of vaccines against serious diseases is remarkable. ”
On the other hand, to strengthen the ability to prevent the COVID-19 pandemic, the Australian Technical Advisory Group on Immunization (ATAGI) has allocated the fourth injection to a number of vulnerable groups, including people with disabilities. disabilities disabilities over 65 years of age, people living in care facilities for the aged or disabled, people with severe immunosuppression and Aboriginal Australians aged 50 and over.
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However, with mounting evidence that a three-dose vaccination regimen is likely to provide sufficient immunity to humans through the coming winter, some experts are suggesting that a second dose should be given. 4 probably won’t be needed for a year.
Terry Nolan, head of vaccine and immunization research at the Doherty Institute and former president of ATAGI, said a fourth dose is needed in the elderly, but doesn’t provide much benefit in younger people.
Sharing this assessment, Tony Cunningham, an expert on viruses and vaccines at the University of Sydney, added that protection against serious illness, especially in young people, needs to be long-term. at least 12 months after the third dose, although the antibodies produced by the vaccine are gradual. gradually decrease over time.
Pharmaceutical company Moderna recently announced the results of trials of a vaccine specifically targeting the SARS-CoV-2 virus strain called Omicron.
According to experts, a new COVID-19 vaccine is likely to be needed every year, when a new strain appears and can be given in combination with the flu shot.