All these vaccine issues may be a godsend for Australia in the long term, do we really want to be part of the guinea pig test and trial battle that is going on all over the world with our extremely low cases.
People forget that all these vaccines have had the production fast tracked, extremely fast tracked.
Remember when they were first talking about vaccines that it would take up to 2 years to make with effective testing, so now it been produced in under 12mths and the effective testing is being done on the worlds population and some issues have arisen, which some how now some want to blame Morrison.
So how long has this covid thing been around for.Effectiveness and safety were key concerns and the Pfizer vaccine approved in the U.S. for emergency use has been found to have 95% efficacy after its second dose.
Before any vaccine can be used widely, it must go through development and testing to make sure that it’s effective against the virus or bacteria and that it doesn’t cause other problems. The stages of development generally follow this timeline:
- Exploratory stage. This is the start of lab research to find something that can treat or prevent a disease. It often lasts 2 to 4 years.
- Pre-clinical stage. Scientists use lab tests and testing in animals, such as mice or monkeys, to learn whether a vaccine might work. This stage usually lasts 1 to 2 years. Many potential vaccines don’t make it past this point. But if the tests are successful and the FDA signs off, it’s on to clinical testing.
- Clinical development. This is a three-phase process of testing in humans. Phase I usually lasts 1 to 2 years and involves fewer than 100 people. Phase II takes at least 2 years and includes several hundred people. Phase III lasts 3 or 4 years and involves thousands of people. Overall, the clinical trial process may stretch to 15 years or more. About a third of vaccines make it from phase I to final approval.
- Regulatory review and approval. Scientists with the FDA and CDC go over the data from the clinical trials and sign off.
- Manufacturing. The vaccine goes into production. The FDA inspects the factory and approves drug labels.
- Quality control. Scientists and government agencies keep tabs on the drug-making process and on people who get the vaccine. They want to make sure it keeps working safely.
