A great vaccination nation? What the government says about herd immunity

Health Secretary Greg Hunt visits the National Drug Discovery Center of the Walter and Eliza Hall Institute for Medical Research (Image: AAP / James Ross)

The Australian government has confirmed that herd immunity to COVID-19 is the long-term goal. The first focus, however, is to provide protection and make vaccines available as soon as possible.

However, the lower rate of effectiveness of AstraZeneca’s vaccine, which is used to vaccinate the majority of Australians, has raised concerns about whether this is even possible. The test results suggest that it has an efficacy rate of 62.1% at two standard doses. The effectiveness increases to 90% with a low dose followed by a standard dose.

In comparison, standard doses of Pfizer and Moderna mRNA vaccines showed 95% and 94% effectiveness, respectively.

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