Transcript for Positive developments of a COVID-19 nasal spray vaccine
correspondent Dr. Jen Ashton, as always with us tracking all of the major developments. And we will begin with the latest coronavirus case numbers from Johns Hopkins university. There are now more than 115.2 million confirmed cases, of coronavirus worldwide, the death toll in this country now more than 518,000, as the CDC reports that close to 16% of the population has now received at least one dose of the vaccine, and those numbers thankfully are climbing very steadily now. And we have three fda authorized vaccines, but we could see over time a difference in the types of vaccines, the way we get the vaccines, could this be easier for us as well? Potentially. And, remember, there are three authorized right now, but people should not lose track of the fact that there are many in development and different routes, so particularly I want to bring to your attention the nasal spray development and what's going on here. There is a small number of covid-19 vaccines that are in current development via nasal spray route. At least four are in phase 1 clinical trials, one in the this country, and also the U.S. And China and India. In animal studies in the labs, the results are very promising in terms of the safety and ef efficacy. And for some context here, we also use nasal sprays in vaccines for flu, influenza, and polio. So there is a precedent there. All right, so we know that it would certainly make it easier. A lot of people who are afraid of needles would be much more likely to get perhaps the vaccination if this was in this form. And what else do we know? Interesting, there is a mechanism in play that makes it appealing, there is mucosal immunity that can be generated via nasal spray vaccination method that also has the potential for reducing transmission and, Amy, as you say, another very appealing nature of this route is this is possibly something down the road that people could even administer themselves. So we will be keeping an eye on it. Very exciting. Thank you, Dr. Jen.
This transcript has been automatically generated and may not be 100% accurate.