In the United States, there are 3.4 million confirmed cases and there have been 138,000 deaths.
Doctor William Schaffner, from Vanderbilt University Medical Centre, says the early results are promising.
"It's a good first step. It looks as though the vaccine generated a vigorous immune response. We like that. We think that's going to be associated with protection. A couple of notes: this is a two-dose vaccine. And there were some people who had sore arms and a little bit of fever and some fatigue, et cetera. (A) Small price to pay for protection against COVID, I would think. So there's nothing there that would inhibit us from going on to larger trials. And they're currently underway."
The vaccine will now be tested on 30,000 people.
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People in Australia must stay at least 1.5 metres away from others.
Testing for coronavirus is now widely available across Australia. If you are experiencing cold or flu symptoms, arrange a test by calling your doctor or contact the Coronavirus Health Information Hotline on 1800 020 080.
The federal government's coronavirus tracing app COVIDSafe is available for download from your phone's app store.
The federal government's coronavirus tracing app COVIDSafe is available for download from your phone's app store.
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