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Could The Coronavirus Pandemic Mean Fewer Flu Deaths This Year?

By Corinne Cardina - Nov 23, 2020 at 7:11AM

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Dr. Jeremy Brown shares how COVID-19 will impact the seasonal flu.

Impressive data from coronavirus vaccine trials led by Pfizer ( PFE 2.32% ) and Moderna ( MRNA 1.74% ), inspired much hope around the world and injected optimism into the stock market. But the flu season is still in full swing and people need to be vigilant in keeping themselves safe.

The Motley Fool sat down with Dr. Jeremy Brown, author of Influenza: The Hundred-Year Hunt To Cure The Deadliest Disease In History and Director of Emergency Care Research at the National Institutes of Health. Dr. Brown shared how the coronavirus pandemic might impact this year's flu season.

 

Corinne Cardina: I'd like to get a little bit more general now, I want to hear about influenza. You, of course, did an insane amount of research for your book about influenza. I'm curious, what is still relevant for today's pandemic that you've learned 100 years after the influenza pandemic?

Dr. Jeremy Brown: Well, as you said, I wrote this book in influenza that came out two years ago now, seems like forever or two years ago in 2018, which the 100th anniversary of the great influenza pandemic of 1918. I looked at what had happened over the last 100 years. I did tell the story of what happened in 1918, which is very sobering of course. Fifty to one hundred million people died across the world, 675,000 people in the United States died, which is the equivalent in today's population of about three million. So it was far more deadly, at least in terms of numbers than the COVID pandemic is so far. Let's hope that COVID pandemic does not catch up to that awful number of deaths in the US and across the world. But influenza does remain, of course a perennial challenge for us. We are still trying to find that vaccine that can be given once and once only that will cover all different types of influenza virus, all the different viruses, across the world they differ from each other. So you can get a vaccine that's given once, it'll be good against all the different kinds of the virus and it will last for many years. Just given a vaccine each year is a problem because people have to remember and they have to come back. If we can have a vaccine that will give us the long-term protection that for instance, the MMR, Mumps, Measles, Rubella vaccine gives us that would be an incredible breakthrough as well. We don't have that yet, with the influenza vaccine. Influenza each year in the United States kills anywhere between 12,000 and over 100,000 people each year. We don't have good statistics about it simply because it's very difficult for everybody to agree on whether a death is caused by influenza or secondary pneumonia from influenza or heart failure caused by influenza in older people and younger people. It's unfortunately easier to decide that this was a death directly from influenza. So we have a very wide range of estimation of the number of people who died. Certainly, the very beginning of the outbreak of COVID people were mourning. I think I was one of them as well. We said, look, so far, this was in January time, the enemy is influenza rather than COVID. Now of course, we know that that changed very quickly. But influenza certainly remains a challenge for all of us. What I am hopeful for is that because of the precautions that all of us are or should be taking with mask and hand washing and social distancing, that the influenza numbers actually will be way lower than they are in a normal year. We would expect that because influenza is passed in much the same way as COVID is passed on droplets. If you're not in the office or on the bus or on the subway being sneezed on by other people who have it, then you're less likely to get it. So one would expect that when the dust settles and we're able to look back at the flu season last year initially, we will actually see a decrease in the number of deaths from influenza. That of course, will again remind us that every year we need to be taking these precautions, COVID will go away eventually, either through a vaccine or through the natural process, all pandemics come to an end. The question is how much damage they can cause while they are active. But when COVID has gone away, I think that we will be able to learn and remind ourselves that just taking these very basic precautions, it's not only good for reducing the risk of COVID, but it's also a very good way to stay healthy over the winter to more flu and other winter viruses. Couple of wonderful studies that were done in which kindergarten children were put into different groups. One class would wash their hand several times a day and the other class would not be told to wash their hand several times a day just as needed. When you compare the two different groups, of course, the kindergartners who washed their hand several times a day had a much lower absentee rate because of virus infections and so on. That's just a little morsel that remind us these very basic precautions that we're all now taking are good, not only for COVID, but for all of the winter viruses.

Cardina: Absolutely. I also hope that people will be more likely to take the flu vaccine this year. We don't have a coronavirus vaccine yet, but what we do have will also help you stay healthy.

Brown: That's right, especially in those members of the population and your listeners who are especially vulnerable, that's the elderly, that's people with underlying medical conditions. Women who are pregnant are also at increased risk of complications of flu. So it's especially important in those vulnerable populations. But of course, the rest of us also should really get vaccinated.

Cardina: Definitely. My last question for you is about those winter months that we just discussed. Of course, we have some holidays coming up. Canada already celebrated their Thanksgiving holiday and their cases went up afterwards. The U.S. is heading in a bad direction. Do you have anything to share about how we should be approaching the coming winter months, the holidays, in the best ways to protect ourselves?

Brown: Yes unfortunately, as you pointed out, the virus is really rampant now not only in North America, but also across Europe. If you've been paying attention to what's going on, England recently entered its second or third full lockdown. Because of the uptick. Much of this is expected to be quite honest. All of the winter viruses are winter viruses, because they do better that time of the year. They don't like the warm, humid weather. They prefer cold, dry weather. They're more sensitive to that warm climate and they reproduce better, they live as well longer in those cold winter climate. I think anybody who knows about the winter viruses would have expected to see this uptick. But the question is to whether we should be getting together with our loved ones for Thanksgiving, I think is something that each family needs to really think about. It's so easy to spread this virus right now. The last thing that anybody wants to remember their Thanksgiving of 2020 for, is that they passed on a coronavirus to grandma or grandpa and that person then died. It would be a horrible Thanksgiving indeed. I would really ask people to decide whether the risks of meeting up with loved ones are really worth of the dangers. It's true that the overwhelming majority of people get COVID and are just fine. But we've experienced over a quarter of a million deaths here in the US. Even though the overwhelming number of people who get coronavirus do well, because of the sheer numbers, we have this terrible mortality. What I hope that people will think about is even if you're going to get together as a family, if there are people within your family who are older, and certain people who are immunocompromised, people who have underlying medical conditions, that would mean that they are more likely to come down with the virus. Skip that this year. Let them Zoom in. We have the technology, have a virtual Thanksgiving dinner. Next year, hopefully we will be able to come together with all of us having safely been vaccinated and we'll be able to tell the story of our virtual Thanksgiving dinner while remaining healthy.

Cardina: That's so great, very optimistic view of what's going to be some tough choices for everyone. But thank you so much Dr. Brown. Fools, make sure you check out his book Influenza: The Hundred-Year Hunt To Cure The Deadliest Disease In History. Dr. Brown, thank you again. We will keep in touch and I hope you stay safe.

Jeremy Brown: Thank you, Corinne, you too and happy Thanksgiving to everybody.

This article represents the opinion of the writer, who may disagree with the “official” recommendation position of a Motley Fool premium advisory service. We’re motley! Questioning an investing thesis – even one of our own – helps us all think critically about investing and make decisions that help us become smarter, happier, and richer.

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Pfizer Inc. Stock Quote
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