United States, New York City, Dr Greg Poland discussed on Mayo Clinic Radio
Helena's Alka. I'm pleased to say that I have with me again today Dr Greg Poland virologist and infectious disease expert at Mayo Clinic. Thanks for being here Greg. Fun To be with you again. Well, I am looking forward to hearing what you have to say to us today the news keeps coming out we are in the US now at about five and a half million cases with over one hundred and seventy thousand deaths. We still have prominent outbreaks particularly in Florida Texas along the southern and southwest rim schools are starting back and we've heard of outbreaks at the college level, the school level most recently l. a. county, which is the think the second largest school. District. In the US decided to cancel any kind of in person classes as they try to get a hold on this but there's something interesting to note New York in New York. City in particular have kept cases suppressed below one percent. Now, this is really remarkable but observers are noticing that because of what New York City went through they don't deny the seriousness of this people take it very seriously. They're wearing masks they're maintaining distance they closed you know bars and things like that were there there are known. Places where the virus easily transmits and it works and somehow it's been difficult to convince our culture society that strict adherence to those things in toto that is doing all of them together is a very, very powerful antidote to this virus months ago I had actually heard that when Amazon boxes come to the house, you should be careful because the virus can live. On surfaces for a period of time, and then there's been concern within some food packaging plants about on the spread of the virus perhaps not just in food but the packaging and I'm wondering what can you tell us about how to handle food packaging is that something we should be concerned about should be wearing gloves to the grocery store should wiping off our groceries. Tell us about that and I maybe just a little bit of a primer here. So the fact that you can find virus IPC are doesn't mean. So to speak that it's live virus, it just means elements of the genetic material or there. The second thing is that doesn't mean that it's infectious virus heart of what infects us is the. them the amount of virus. So for example, it's highly doubtful whether one particle a virus could actually cause infection. No one knows what at inoculate size is. All right. So what what has been done is a number of studies showing that you can find the genetic material. For days sometimes, even weeks on various kinds of hard surfaces or external surfaces. The ones that are at risk are where there's high knock ulum size I go. And then I grabbed a door not in your right behind me and grab it. We think that's logically a risky thing because we know with other respiratory viruses like influenza that you can get in, you can infect other people in get infected that way no one has proven that with food or with external packaging that's different than the hard surface in A. Hospital Room, for example, where that innocuous size might be very high if it if it housed patient. So so first of all I think we can say there's not been a single demonstration that viruses on food, Ben Infect somebody or on a package than infect somebody you've been giving us updates all along on the vaccines that are being developed can. You tell us how the vaccine trials that are in phase three are going right now, the phase three trials that are occurring in the US have enrolled slower than than thought at least last week Remember they have to enroll thirty thousand they had enrolled about forty five hundred now only roughly about fifty nine I think it was of the eighty four. Clinical trial sites had opened as of a week or two ago. So I expect that that will accelerate a little more. But when you think about it, those I participants that enrolled, let's say early August you have to wait thirty days than they get another dose two weeks after that, they get a blood draw than all of those hundreds of thousands of. Laboratory assays have to be done. The data has to be analyzed, etc. You're talking well into twenty twenty one before those data would be available could be looked at by the FDA and by expert advisers. So I I think realistically and which said it all along and less another mechanism is used. If we go through full licensure, I don't think we should be looking for a vaccine for another six months and for some people because of the time it takes to manufacture doses a year even i. had shared with that. I had seen an interesting study done which I thought was actually rather well done. Where they compared masks in how effective they are waiting for that. Beck, seen that unfortunately is taking longer than we wish and I, had read about four different types of masks and their their efficacy, and I was hoping that you and I could just talk a little bit about them today and I have a gainer on myself right now. So if you can start by telling us about gators and these. are very lightweight to have their kind of stretchy cotton. If you held them up to the light, you can see through it and what they found is that really did not decrease the number of large viral particles by very much and in fact, if found something worrisome and that is by spelling the particle through the material, it actually served to take the big particles and fracture them into more dangerous smaller particles. So these mass, don't prevent you from expelling virus, and in fact, make it riskier for other people next they tried bandannas a double layer of Bandanna that decrease the number of particles I think by about twenty thirty percent something like that, and then this is the most common type of Massa. Mass. Mass, that's a three layer paper mask or so-called medical or surgical masks. Those are surprisingly good worn properly, they're not perfect. There is no even the end ninety five is not.