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Developing a vaccine capable of inducing “sterilizing immunity” — that is, the ability to prevent the virus from causing an infection — takes time and research, which might not be possible as death tolls continue to rise and the recession grows deeper. Yet with so many companies on the hunt for that vaccine, there is hope one of them might actually achieve it.
Scientists had studied other coronaviruses — SARS and MERS — and mapped the novel coronavirus' genome not long after the first COVID-19 deaths were recorded.
and created a three-dimensional model of the virus to see how antibodies block infection by binding onto the spike protein.
The vaccine being developed by Moderna and the National Institutes of Health was deemed in an editorial published in the New England Journal of Medicine, and two studies in the Lancet delivered a similar message for vaccines being developed at Oxford University and by the Chinese company CanSino.
These vaccines have induced an immune response in people participating in early tests, but inducing an immune response does not always mean success in fighting a disease. For instance, scientists recently developed a vaccine for another respiratory virus that its Phase 3 clinical trial. -
The premier of Victoria plunged the region into a "state of disaster" on Sunday, announcing even stricter lockdown measures, introducing a nightly curfew and banning virtually all trips outdoors after Australia's second largest state recorded 671 new infections in a single day.
Daniel Andrews told Victorians at a news conference that "we have to do more, and we have to do more right now," as the state battles to contain a devastating coronavirus outbreak that had already stripped residents of their freedoms, livelihoods and social interactions and made it an outlier from the rest of the country.