Viral vectors are modified viruses that trigger an immune response without causing infection. The vector that’s used in several COVID-19 vaccines was created decades ago by Canadian Frank Graham.
Before the pandemic, the public perceived science as infallible and inaccessible. But the opening up of research to the general public has changed that perception.
You’ll read lots of different figures on this — six months, eight months, more — and that’s because the research is ongoing. We don’t yet have a concrete answer.
As we continue to roll out COVID-19 vaccines around the world, we’re learning people who are immunocompromised aren’t necessarily protected as well from the first two doses.
Some countries have started administering third doses of COVID vaccines, or booster shots. But we’re still learning about how long immunity lasts from the first two shots.
Not vaccinating children means living with the knowledge we haven’t done everything possible to ensure they don’t transmit COVID to more vulnerable people.
The federal government has announced the Pfizer vaccine will be available to all Australians from August 30. Though there may well be long waits.
What do you need to weigh up when working out whether to get the AstraZeneca vaccine? Here’s what the evidence says.
To paraphrase a legendary golfing saying, the harder you work, the luckier you get.
Vaccinating a population requires a proactive approach to health promotion and community preparedness.
Weeks do matter when it comes to the Delta strain. With Australia still heavily reliant on the AstraZeneca vaccine, for now it makes sense to reduce the time between the first and second jab.
The messages people under 60 have been getting about the AstraZeneca vaccine this week have been confusing, to say the least. Experts say to consider the risks and benefits. But how do you do this?
A study at the University of Oxford has looked at what happens when people receive one dose of AstraZeneca one dose of Pfizer.
At the moment, the scheme only applies to health practitioners, not patients.
While Pfizer is still the preferred vaccine for under 40s, those who don’t want to wait can now talk to their GP about getting an AstraZeneca shot. But what risks and benefits do you need to weigh up?
With higher rates of vaccination, the current COVID outbreaks may have been more easily managed.
Just like your memory, which improves by repeated viewing or listening with a break in between, our immune memory improves with repeated exposure.
Two doses have always been more protective than one, but the delta variant has made the benefit of a second vaccine much greater.
While it’s potentially promising, there’s not enough information yet to determine if the vaccine is safe and effective.
Our attitudes and behaviours are shaped by what others in society do. So there’s a real danger that vaccine hesitancy, when reported widely in the media, could catch on to more people.