Can we reach herd immunity without a vaccine?

Answers to your latest COVID-19 questions from Dr. Jen Ashton.
2:56 | 09/21/20

Coming up in the next {{countdown}} {{countdownlbl}}

Coming up next:

{{nextVideo.title}}

{{nextVideo.description}}

Skip to this video now

Now Playing:

{{currentVideo.title}}

Comments
Related Extras
Related Videos
Video Transcript
Transcript for Can we reach herd immunity without a vaccine?
Dr. Jen joining us now with answers to your quest on coronavirus. Dr. Jen, we'll start with the first one -- can herd immunity only be achieved with a vaccine? This is good question. The short answer is no, it can potentially be achieved with natural exposure to an infection but in particular with covid-19, when you hear that term, it's a loaded question. Right now, the estimates are only about 10% maximum of the U.S. Population has been exposed to covid-19. We have 200,000 deaths. Most epidemiologists cite a level of 50%, 60%, 70% of the population naturally infected or vaccinated to get herd immunity. Do the math, that would be incredible costly. Next question here, lot of people take the tests, another question from a viewer, what do we know about this new covid-19 test? This is a molecular test. It looks at the pcr. It has a very wide accuracy in terms of false negative, could be as long as 3%, as high as 37%. There's a huge range, but initially, way back in the spring, these tests were not that accurate, now, there's some evidence that they're more accurate than the nasal swab, but again, any test only as good as the way it's done. If you lightly spit, probably you're probably net getting enough material, you have to really gargle, I won't demonstrate it. Give it a good college try. Speaking of accuracy and how the test is done, our next question asks, if the test doesn't hurt, is it not done properly? I'm getting so many questions and comments about this on my Instagram. I demonstrated how I got one of my tests last weekend. People were saying it was excruciating, little uncomfortable, or they didn't feel anything at all, this is all relative. For a test in the nasal area to be accurate it has to be done properly. I asked Dr. Tony Fauci personally, he said both nostrils, about five to ten seconds, now, like anything, if you do it well, with good technique, it shouldn't be that excruciating. You put on a scale between kidney stones, childbirth and breaking a leg, come on, it's not up there. Is it a walk in a park? No, but it's necessary. The people who are doing it hopefully are good at it. All right, good to know. Thank you so much, Dr. Jen. You can submit questions to Dr. Jen on her Instagram @drjashton. Now to the new information

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

{"duration":"2:56","description":"Answers to your latest COVID-19 questions from Dr. Jen Ashton.","mediaType":"default","section":"ABCNews/GMA","id":"73148338","title":"Can we reach herd immunity without a vaccine?","url":"/GMA/GMA3/video/reach-herd-immunity-vaccine-73148338"}