Daily Bulletin


  • Written by Adam Taylor, Early Career Research Leader, Emerging Viruses, Inflammation and Therapeutics Group, Menzies Health Institute Queensland, Griffith University
Australia's just signed up for a shot at 9 COVID-19 vaccines. Here's what to expect

Australia’s A$123 million contribution to a global vaccine initiative, announced earlier this week, means the country would have access to a wider pool of COVID-19 vaccines, should they pass clinical trials.

The agreement with the World Health Organisation-backed COVAX initiative currently covers nine vaccines, with another nine being considered. These are to be shared with other member countries, rich and poor, by the end of 2021.

However, the agreement may only cover up to half the doses Australia needs, if each person needs two doses. So countries are still free to negotiate their own vaccine deals with individual manufacturers, as Australia has done.

Here’s what you need to know about the nine vaccines COVAX is currently backing, which are at various stages of development. These include pre-clinical animal testing and human clinical trials, which move through three phases. During the pandemic, some of these phases have been combined.

Read more: Why 'vaccine nationalism' could doom plan for global access to a COVID-19 vaccine

1. INO-4800 comes with a zap

INO-4800 is a DNA vaccine being developed by US company Inovio.

After the vaccine is injected, a hand-held device delivers a short electrical pulse. This pulse opens small pores in your cells to allow the vaccine to enter.

Once inside your cells, instructions in the vaccine’s DNA are used to make copies of the full spike protein of SARS-CoV-2, the virus that causes COVID-19. Your body mounts an immune response against this, ready to protect you the next time you encounter the virus.

Phase 2/3 trials are expected to begin soon. No serious side effects were reported from clinical trials so far.

2. Moderna’s mRNA-1273 is in phase 3

The mRNA-1273 vaccine is developed by US company Moderna with the US National Institutes of Allergy and Infectious Diseases. The genetic material in this RNA-based vaccine also codes for the full spike protein.

There have been promising results from trials so far. The vaccine is in phase 3 clinical trials.

3. Germany’s CVnCoV may have one or two doses

CVnCoV is another RNA-based vaccine and is made by German company CureVac. It also codes for the virus’ spike protein.

The vaccine has entered phase 2 trials, which is testing one and two doses.

4. TMV-083 uses a version of the measles vaccine

TMV-083 is being developed by Institut Pasteur and American company Merck. It is in phase I trials.

The vaccine uses a live-attenuated (weakened) measles vaccine to deliver and express the SARS-CoV-2 spike protein. The virus is still viable (live) but cannot cause disease.

Read more: From adenoviruses to RNA: the pros and cons of different COVID vaccine technologies

5. AZD1222, the Oxford vaccine

AZD1222 is being developed by AstraZeneca with the University of Oxford. It uses a modified chimpanzee adenovirus to express the SARS-CoV-2 spike protein.

There have been good antibody responses against SARS-CoV-2 and no severe side effects in early clinical trials.

Phase 3 trials have started in multiple countries. However, these were suspended recently after a study participant developed an immune complication. The trials have since resumed.

Australia has already entered an agreement to supply this vaccine should phase 3 trials prove successful. This deal is independent of the COVAX agreement.

Read more: The Oxford deal is welcome, but remember the vaccine hasn't been proven to work yet

6. Modified flu vaccine delivered up the nose

The University of Hong Kong has developed a flu-based vaccine, which was recently approved for human clinical trials with Chinese company Beijing Wantai.

It will be the first nasal spray COVID-19 vaccine to be tested in humans.

The weakened flu virus delivers a part of the SARS-CoV-2 spike protein, which elicits a highly targeted immune response.

7. NVX-CoV2373 was tested in Australia

NVX-CoV2373 is a protein subunit vaccine developed by US company Novavax. It is made from purified pieces of the virus (full-length SARS-CoV-2 spike protein). It also contains an adjuvant — an extra molecule that boosts the immune response.

The vaccine was safe and stimulated a strong immune response in early clinical trials in Queensland and Victoria. Phase 3 trials are expected to start soon.

Read more: The vaccine we're testing in Australia is based on a flu shot. Here's how it could work against coronavirus

8. SCB-2019 is another protein subunit vaccine

SCB-2019 is another protein subunit vaccine, this time developed by Chinese company Clover Biopharmaceuticals. It is also based on the spike protein of SARS-CoV-2, purified in the lab, and also uses an adjuvant to stimulate the immune system.

Phase 1 trials have started in partnership with GlaxoSmithKline and Dynavax Technologies.

Read more: 5 ways our immune responses to COVID vaccines are unique

9. University of Queensland’s ‘molecular clamp’ vaccine

This vaccine is another protein subunit vaccine. It uses a “molecular clamp” to stabilise the SARS-CoV-2 spike protein in the configuration thought to elicit the best protective immune response.

A phase 1 trial, in partnership with CSL, started in July.

The Australian government has already entered into a deal to supply this vaccine should it progress through phase 3 trials. This deal is independent of the COVAX agreement.

Read more: Putting our money on two COVID vaccines is better than one: why Australia's latest vaccine deal makes sense

Authors: Adam Taylor, Early Career Research Leader, Emerging Viruses, Inflammation and Therapeutics Group, Menzies Health Institute Queensland, Griffith University

Read more https://theconversation.com/australias-just-signed-up-for-a-shot-at-9-covid-19-vaccines-heres-what-to-expect-146750

Writers Wanted

Heading back to the playground? 10 tips to keep your family and others COVID-safe


Qatar expresses 'regrets' for 'any distress' to women invasively searched in baby incident


Education & More – Family Tips on How to Settle in Bangkok


The Conversation


Prime Minister Interview with Kieran Gilbert, Sky News

KIERAN GILBERT: Kieran Gilbert here with you and the Prime Minister joins me. Prime Minister, thanks so much for your time.  PRIME MINISTER: G'day Kieran.  GILBERT: An assumption a vaccine is ...

Daily Bulletin - avatar Daily Bulletin

Did BLM Really Change the US Police Work?

The Black Lives Matter (BLM) movement has proven that the power of the state rests in the hands of the people it governs. Following the death of 46-year-old black American George Floyd in a case of ...

a Guest Writer - avatar a Guest Writer

Scott Morrison: the right man at the right time

Australia is not at war with another nation or ideology in August 2020 but the nation is in conflict. There are serious threats from China and there are many challenges flowing from the pandemic tha...

Greg Rogers - avatar Greg Rogers

Business News

AppDynamics Solves Visibility Gap Between Traditional Infrastructure and Cloud Environments

New Full Stack Observability Platform, Integration With Cisco Intersight Workload Optimizer and Cloud Native Visualisation Features Provide Cross Domain Insights and Analytics of Business Perfor...

Hotwire Global - avatar Hotwire Global

Why Your Small Business Should Bulk Buy Hand Sanitiser

As a small business owner, employee and customer safety is at the very top of your priority list. From risk assessments to health and safety officers, appropriate signage and proper briefing...

News Co - avatar News Co

How Phone Number Search In Sydney Can Help Your Business

To run a successful business, keeping track of your company and competitors are the major factors. With a lot of tools, available businesses have options to stay current. One way in which busine...

News Co - avatar News Co

News Co Media Group

Content & Technology Connecting Global Audiences

More Information - Less Opinion