There are many scientific and ethical challenges ahead. But these types of trials have helped in the development of vaccines against a few diseases. Could they do the same for COVID-19?
Australia's contribution to the global COVAX initiative helps secure future vaccines. Here's the full field of candidates.
Common and cheap drugs save lives of patients critically ill with COVID-19, a new analysis shows. But these corticosteroids are not a cure.
Conventional trials to test coronavirus vaccines are paradoxically slowed down by actions to curb the disease's spread. Human challenge trials are more controversial, but could speed up the process.
Further tests are needed but a trial showed that, when compared against placebo treatment, those given the drug had a 79% lower risk of developing severe disease.
In a pandemic like this one, the priority is to save lives. But without a vaccine, there's a limit in the tools available to save lives.
The body has many natural defenses against viruses and other pathogens. One antiviral molecule produced in the body is nitric oxide and it is created when we breathe in through the nose.
Why does COVID-19 hit men harder than women? Is the disparity in mortality rates due to male hormones or an underlying difference in the male versus female immune system?