New hopes for COVID-19 vaccines as cases rise

Dr. Anthony Fauci said while there are no guarantees amid the next phase of vaccine trials, he is “cautiously optimistic” about a vaccine by end of the year or beginning of 2021.
2:01 | 06/10/20

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Transcript for New hopes for COVID-19 vaccines as cases rise
Now, the news this evening on the coronavirus, the number of cases spiking in several states across this country. And there's news tonight on a potential vaccine. Tens of thousands of Americans volunteering to get injected with potential vaccines on the horizon. So, what could this mean for any timeline for the rest of the country? Here's Matt Gutman on that. Reporter: Tonight, the U.S. Government saying tens of thousands of volunteers will soon receive injections with one of three of experimental vaccines. Those injections are part of third phase of vaccine trials, the stage before possible approval. And Dr. Anthony Fauci now saying there are no Garn teens, but he's cautiously optimistic about at least one of them working. We could have a vaccine either by the end of this calendar year or in the first few months of 2021. Reporter: Moderna beginning phase three trials in July, followed by the university of oxford and astra-zeneca's vaccine in August and Johnson & Johnson in September. The goal, to test the vaccine's safety and effectiveness. That, as at least 20 states plus Puerto Rico seeing increases in new cases, and eight states reporting rising hospitalizations. In Texas, hospitalizations jumping 40% since memorial day. Officials there say it's too early to tell if that's because of reopening, the protests or both. And in Arizona, hospital systems tell us they're maxing out of icu beds. In mid-may, the projection for covid deaths was 600. Right now, the projection is 4,500, correct. That's a pretty significant change. That's an alarming trajectory. Reporter: David, the goal of a phase three trial is to determine how well a vaccine that's why they're casting a wide net, up to 90,000 volunteers. Half of them will be given a placebo, the other half, the actual vaccine. It will be later determined how many show the presence of antibodies. David? Matt Gutman, thank you again tonight, as well. We're also following that developing headline in the case

This transcript has been automatically generated and may not be 100% accurate.

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