June 27, 2020

Here’s What It Looks Like When People Don’t Wear Masks
With the advent of an infectious disease outbreak, epidemiologists and public health officials quickly try to forecast deaths and infections using complex computer models. But with a brand new virus like the one that causes COVID-19, these estimates are complicated by a dearth of credible information on symptoms, contagion and those who are most at risk.My team at the Goldenson Center for Actuarial Research has developed a free, user-friendly computer model that has a different goal. It demonstrates how infections and deaths progress on a daily basis over a three-month period depending on how people behave in response to the outbreak. This model allows the public to input data that demonstrate how changes in safety measures in their communities, including wearing face covering and social distancing, can significantly impact the spread of this virus and mortality rates.How Wearing a Face Mask, or Not, Became the Dumbest Culture WarOur Goldenson Center COVID-19 model uses a hypothetical 1,000-person population and calculates outcomes using three types of information: the initial number of infections, social distancing, and personal protection measures that include wearing masks, frequent hand-washing and staying quarantined if exhibiting COVID-19 symptoms. Our model then uses this initial information to project on a daily basis the cumulative infections and deaths over a three-month period. It’s not based on actual disease data and is designed to demonstrate the effects of safety measures, rather than make specific predictions.By inputting different assumptions, people can see how their community’s personal actions can change the course of this pandemic —and how poor protocols can trigger exponential spread of the virus.For example, let’s assume that 100 people are infected out of a population of 1,000, with one in 10 wearing masks, keeping appropriate distance and quarantining if necessary. The model shows that 30 days later, the virus would have killed 156 people. After three months, the death toll reaches 460—with 510 now infected.However, our model shows that if half the population practices safe protocols, infections after 90 days drop to 293 and deaths drop even more dramatically, to 149—about one-third of the lives lost under looser measures.The main takeaway is that safety measures that are within our control have significant impact—and ignoring those protocols can have dire consequences.If a state opens up and maintains safety measures for at least three months, the virus will be contained and possibly eliminated. On the other hand, if a state opens up too soon and its residents ignore safety protocols, there could be an exponential increase in COVID-19 deaths within months. It’s important for the public to realize that spread of the virus is impacted only by personal behavior. What Happens When Few People Wear Masks What Happens When Most People Wear MasksOur model shows that there must be continued emphasis on maintaining necessary safety measures as we relax shelter-in-place rules and get people back to work. Practicing common-sense social distancing, wearing masks in public and quarantining when necessary is a small inconvenience for a limited amount of time—that will contain the devastation of this virus and ensure that our economy is restored.Jeyaraj Vadiveloo is director of the Janet and Mark L. Goldenson Center for Actuarial Research at the University of Connecticut
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Coronavirus Disease

Coronavirus disease (COVID-19) is an infectious disease caused by a newly discovered coronavirus.

Most people infected with the COVID-19 virus will experience mild to moderate respiratory illness and recover without requiring special treatment. Older people, and those with underlying medical problems like cardiovascular disease, diabetes, chronic respiratory disease, and cancer are more likely to develop serious illness.

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