Australian State Media
Why are fully vaccinated people subject to COVID-19 restrictions, and is that likely to change?
Millions of Australians are grappling with fresh COVID-19 lockdowns and enhanced social distancing measures as the country faces multiple unfolding outbreaks.
People, regardless of their vaccination status, are being asked to wear face masks, comply with strict stay-at-home orders, and adhere to various state border closures.
It's a different picture to Europe and many other parts of the world, where authorities have opened or are set to open quarantine-free travel to people who are fully immunised against COVID-19.
So why are fully vaccinated Australians not afforded the same freedoms? And can we expect that to change?
How much protection do I get when I'm fully vaccinated?
Australia's COVID-19 vaccines are highly effective at protecting people against symptomatic and severe disease, and at reducing their risk of becoming infected.
But no vaccine is 100 per cent effective, said epidemiologist Meru Sheel of the Australian National University.
"They reduce your ability to get the infection … but these vaccines were never designed to stop 100 per cent of infection," Dr Sheel said.
The vaccines' effectiveness depends on how many doses someone has received, and what COVID-19 variant is circulating.
It is currently recommended that people have two shots of Pfizer three weeks apart, or two shots of AstraZeneca 12 weeks apart, for maximum effect.
Data suggests two shots of either the AstraZeneca or Pfizer vaccines reduce the risk of hospitalisation and death by more than 90 per cent against the original virus.
And two doses of Pfizer provide around 94 per cent protection against symptoms, while two doses of AstraZeneca provide 74 per cent protection.
But both vaccines are less effective against the highly transmissible Delta variant, Dr Sheel said.
While one dose of either vaccine only provides around 33 per cent protection against symptoms from Delta, two doses provide between 88 per cent (Pfizer) and 60 per cent (AstraZeneca) protection against symptoms.
https://www.abc.net.au/news/health/2021-06-29/why-covid-19-restrictions-still-apply-to-vaccinated-people/100249154