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Batty pathogens: Why do bats spread so many diseases?

Let’s face it — bats get a bad rap. Their links to disease outbreaks and their spooky association with vampires influence their notoriety. In reality, bats are truly remarkable. Bats support our agricultural industries as vital members of food webs. And, contrary to their portrayal in popular Halloween blockbusters, they are gentle and tidy creatures that groom themselves like cats. So why is it that when we hear of disease outbreaks, it always seems to be bats? According to University of Florida Emerging Pathogens Institute member Jim Wellehan, D.V.M., what sets bats apart isn’t black magic at all. But rather, it’s their long history of co-existing with viruses, the unique tradeoffs of flight and, perhaps most of all, a history of adapting to new pathogens. “(Infectious disease) has been the biggest factor in all of evolution,” said Wellehan, who is also a professor at the UF College of Veterinary Medicine. “People are always looking for an excuse (as to) why bats are magic, and the truth is bats have just been exposed to a lot of stuff and selected for those genes accordingly.” While humans are the most populous mammals on Earth, bats are a massive group of animals. Behind rodents, they represent the second-largest group of mammalian biodiversity, accounting for a whopping 20% of all mammal species. With over 1,400 species, it’s no surprise that pathogen diversity in bats is just as extensive and complex. Jim Wellehan's research focuses on comparative infectious disease, pathogen evolution, molecular diagnostics and pathogen discovery. View his profile here Bats, as we know them, have been on Earth for over 50 million years. This extensive period has given pathogens plenty of time to evolve alongside the winged mammals. Bats carry viruses like Ebola, Hendra virus, Nipah virus and SARS-CoV-2, which causes COVID-19. One factor that is important in this viral diversity is flight. Flight provides bats with many evolutionary advantages, such as predator evasion, access to new food sources and the ability to exploit diverse habitats. Flight also dramatically increases the chance of rapid pathogen transmission, as they can travel long distances and past many geographic barriers. Many species are highly social, which increases transmission rates as they live in close proximity and groom one another. “When I first learned about Darwin and evolution, ‘survival of the fittest,’ I assumed, meant ‘smartest and fastest and strongest,’ but if you look at our genomes, turns out that's wrong,” said Wellehan. “The genes that are selected for are mostly immune-related. The most important thing is to have enough genetic diversity in your population so that someone has immunity genes that are effective against the next pathogen that doesn't even exist yet. With their increased mixing and contact rates, bats have done this more often than most animals.” Generally, pathogens are most likely to cause disease when they first infect a new host species, as the susceptible animals have not yet developed the necessary defenses. Pathogens, along with their hosts, have no choice but to evolve to survive. With such a wide variety of species, it is not surprising that bats also carry a large proportion of mammal-associated viruses. This is not to say that bats are immune to all pathogens. As the most rapidly evolving factor in life, infectious disease is an incredibly dynamic part of medicine. Bats can get sick from lyssaviruses, including rabies. Additionally, white nose disease, a fungal infection that targets hibernating bats, has been a growing concern in the United States for the past decade. Though bat pathogens are a significant concern, habitat disturbance plays a larger role in bat population pathogen emergence, ultimately affecting humans as the dominoes fall. “Pathogen transmission to humans and conservation efforts go hand in hand,” Wellehan said. “When populations get under stress, that's when ecological balances get shifted, and zoonotic jumps occur. ... It turns out that if we think of ourselves as something separate from nature, it doesn't work so well.” So, while bats may embody the spirit of Halloween, their “magic” lies in evolution and resilience, shaped by millions of years of flying in the face of viruses, not spooky legends. Looking to know more? We can help. Jim Wellehan is available to speak with reporters about bats - simply click on his icon now to arrange an interview today.

Hurricane Melissa: Preparation, decision making and recovery from potentially 'catastrophic' storm

Hurricane Melissa, now a Category 5 storm, is projected to cause “catastrophic” flooding and inflict severe damage in Jamaica. The University of Delaware’s Disaster Research Center has several experts who can talk about preparations, evacuations, health impacts, decision making and recovery. The following experts in the DRC – which has a few contacts in Jamaica – are available for comment. Jennifer Horney: Health impacts of disasters as well as how cuts to aid and emergency assistance will factor into recovery after the storm. Sarah DeYoung: Pets in emergencies, infant feeding in disasters and decision-making in evacuation. Tricia Wachtendorf: Evacuation decision-making, disaster response and coordination, disaster relief (donations) and logistics, volunteer and emergent efforts, social vulnerability. Jennifer Trivedi: Can talk about preparedness steps and recovery as well as challenges for people with disabilities during disaster, cultural issues and long-term recovery. Shanjia Dong: Research looks at infrastructure systems, critical infrastructure protection, effective disaster preparedness and response, and equitable resilience planning and climate change adaptation. A.R. Siders: Expert on sea level rise and managed retreat – the concept of planned community movement away from coastlines and flood-prone areas. To contact these experts directly and arrange an interview, visit their profiles and click on the "contact" button. Interested reporters can also email MediaRelations@udel.edu.

Lighting the Night: The History and Meaning of the Jack-o’-Lantern

No Halloween is complete without the warm flicker of a Jack-o’-Lantern glowing from porches and windowsills. But long before it became a symbol of trick-or-treating and fall décor, the carved pumpkin had deep roots in folklore, superstition, and the immigrant experience that shaped North American culture. From Folklore to Flame The story begins in Ireland, where early Jack-o’-Lanterns were not pumpkins at all, but turnips and beets. The tradition sprang from an old Irish folktale about “Stingy Jack,” a clever but dishonest man who tricked the Devil and was doomed to wander the Earth with only a burning coal inside a hollowed-out turnip to light his way. People began carving their own “Jack’s lanterns” to ward off wandering spirits and evil forces during Samhain, the Celtic festival marking the end of the harvest and the beginning of winter. When Irish and Scottish immigrants brought this tradition to North America in the 19th century, they discovered that the native pumpkin—larger, softer, and easier to carve—was the perfect replacement. The transformation from turnip to pumpkin turned a small superstition into a dazzling new folk art. The American Reinvention By the mid-1800s, Jack-o’-Lanterns had become a staple of Halloween celebrations in the United States. Newspapers of the era described “pumpkin lanterns” lighting up autumn gatherings, and by the early 20th century, the smiling (and sometimes sinister) carved pumpkin was the defining symbol of the holiday. Over time, the tradition evolved from scaring away spirits to creating community and creativity. Towns began holding carving contests, families passed down patterns and designs, and pumpkin patches and Halloween festivals turned the once-humble lantern into an essential piece of American seasonal culture. A Symbol Beyond Scares Today, Jack-o’-Lanterns carry layered meanings: they celebrate harvest, creativity, and folklore while keeping a touch of the supernatural alive. In many ways, they embody the blend of ancient myth and modern celebration that defines Halloween itself—where fear meets fun, and the flicker of a candle becomes both decoration and tradition. Whether whimsical or eerie, the glowing face of a Jack-o’-Lantern continues to connect generations to an age-old story about light overcoming darkness—a reminder that even the spookiest traditions began with a spark of human imagination. Connect with our experts about the folklore, cultural history, and enduring legacy of the Jack-o’-Lantern. Check out our experts here : www.expertfile.com

Understanding and predicting extreme weather in a changing climate

Kelsey Malloy is an assistant professor of climatology in the University of Delaware’s Department of Geography and Spatial Sciences, where she leads the Malloy Climate Research Group. Her research seeks to understand predictable climate variability and how large-scale climate patterns shape local weather and drive extreme events such as tornado outbreaks, floods and severe storms. Malloy’s research advances the predictability and understanding of severe weather in the United States and beyond. Her studies, published in Monthly Weather Review, Weather and Forecasting and Earth’s Future, have shed light on the climate signals influencing tornado activity and Great Plains rainfall. A member of the U.S. CLIVAR Predictability, Predictions, and Applications Interface Panel, Malloy also teaches courses in meteorological analysis and climatology, preparing the next generation of atmospheric scientists. In November 2025, Malloy will share her passion for climate science at TEDxUniversityofDelaware, using storytelling to illustrate climate’s enduring fingerprint on human history and experience. To speak with Malloy about the weather, email mediarelations@ude.edu.

LSU Hurricane Expert Jill Trepanier Available to Speak on Hurricane Melissa

Hurricane Melissa has rapidly intensified into a monster Category 5 storm threatening Jamaica and the Caribbean, LSU hurricane expert Jill Trepanier is available to provide expert insight and interviews. Trepanier specializes in hurricane climatology and the estimation of risk using statistical methods. Currently, she uses this information to estimate risk to cultural heritage institutions, Native American sites, and coastal fisheries. She also assists in environmental science education development through the implementation of weather stations and real-time data to K-12 classrooms in South Louisiana. Trepanier can speak on the following topics:  Why monster storms like Hurricane Melissa are becoming more common – How climate change and ocean warming fuel stronger, longer-lasting hurricanes in the Gulf and Atlantic. The science behind rapid intensification – What drives a storm to explode from mild to catastrophic strength in less than a day. When hurricanes stall — the hidden danger – Why slower-moving storms can cause record-breaking rainfall and inland flooding. Mapping the coast’s future risk – Using climate models and extreme-value statistics to identify which Gulf and Atlantic regions face the highest hurricane threat. Building resilience before the next big one – Turning hurricane risk data into smarter coastal planning, infrastructure design, and emergency response. Understanding the probability of extreme wind and surge events – What the data reveal about the odds of another Hurricane Melissa—and how those odds are shifting. The human cost of storm uncertainty – How better hurricane modeling and communication can save lives by improving public understanding of risk.

Expert Insight: UGA Franklin College of Arts and Sciences' Marshall Shepherd was recently featured in Forbes Magazine

In a September article featured in Forbes, Marshall Shepherd reports on a new tool launched by Project Drawdown that aims to deliver personalized climate-action strategies to different users—including policymakers, businesses, and individuals. In the piece, he explains that the tool helps match context-specific emissions reduction or resilience options to the particular needs, geography, and capacities of the user, rather than prescribing one-size-fits-all solutions. Shepherd also emphasizes that tools like this can help bridge the gap between climate science and real-world decision-making. He argues that equipping stakeholders with tailored pathways could accelerate uptake of effective interventions by making them more relevant, feasible, and compelling. Ultimately, Shepherd presents the new Drawdown resource as a promising model for democratizing access to climate solutions, enabling individuals and organizations to engage in strategies best suited to their specific circumstances. Dr. J. Marshall Shepherd is a leading international weather-climate expert and is the Georgia Athletic Association Distinguished Professor of Geography and Atmospheric Sciences at the University of Georgia. Dr. Shepherd was the 2013 President of American Meteorological Society (AMS), the nation’s largest and oldest professional/science society in the atmospheric and related sciences. View his profile here Dr. J. Marshall Shepherd is a leading international weather-climate expert and is the Georgia Athletic Association Distinguished Professor of Geography and Atmospheric Sciences at the University of Georgia. He's available to speak with the media about this topic - simply click on his icon now to arrange an interview today.

Gig worker protection law boosted overall earnings but dropped hourly pay

A 2020 California law designed to protect gig workers by classifying them as regular employees, rather than contractors, ended up increasing their earnings by about 8%. However, their hourly pay dropped by 1.6% as companies offset the higher costs of benefits. Workers’ increased earnings came from working longer hours in order to qualify for and reap benefits like employer tax sharing. These findings come from a study led by Liangfei Qiu, Ph.D., a professor in the University of Florida’s Warrington College of Business, which examined nearly 400,000 monthly work records from about 41,000 freelancers on Upwork, one of the world’s largest online labor platforms. That trove of data let the researchers ask what actually happened when the law, known as AB5, took effect. Qiu’s is the first study to reveal how AB5 affected workers’ income and comes as other states consider passing similar laws. Liangfei Qiu is an expert in social technology, including social media and social networks, as well as artificial intelligence. View his profile here “It highlights some unintended consequences,” Qiu said. “If the labor market competition is similar to what we observe in California, then you might get lower hourly rates for gig economy workers and longer working hours.” “But it’s nuanced. In surveys, gig workers said they were willing to work longer hours because they had better benefits. The outcome depends on how involved someone is in the gig economy,” Qiu added. AB5 was designed to correct what labor advocates saw as widespread misclassification of a company’s essential employees as independent contractors, who don’t typically earn any benefits. This classification gives companies a cheaper workforce, and provides maximum flexibility for workers, but doesn’t allow workers to earn any sick leave, vacation or health insurance. Self-employed contractors must also pay the full share of Social Security and Medicare taxes, which works out to about 15% of gross income. Gig economy companies fought back against the AB5 regulations. A company-sponsored ballot referendum, Prop 22, exempted well-known giants like Uber, Lyft and DoorDash from the law later in 2020. And the California legislature provided further carve outs for professions like doctors, lawyers and photographers. The law still applies to contractors used by delivery companies like FedEx, UPS or Amazon, home-service companies like Angi or Rover as well as online freelance platforms like TaskRabbit. The study is forthcoming in the journal Information Systems Research. Qiu collaborated on the analysis with researchers at Baylor University, Santa Clara University and Stony Brook University. Looking to know more about the 'gig economy' and how it impacts the workforce? Connect with Liangfei Qiu today and click is icon now to arrange a time to talk.

Global trade shifts: The long-term implications of Trump's tariff policies on international relations

Everyone from farmers to Fortune 500 companies are now feeling the impact of Trump administration tariffs aimed primarily at reducing the trade deficit and reviving domestic manufacturing. University of Delaware experts offer insight into the economic, political and social impacts of these tariffs and what the future of U.S. trade policy may hold. Experts available: Alice Ba, associate professor, International Relations and Comparative Politics – Topic: Economic implications of tariffs on domestic industries and global supply chains. Dan Green, associate professor, International Relations and Political Theory – Topic: Political dynamics of U.S. trade policy and congressional responses. Dan Kinderman, professor, Comparative Politics and International Relations – Topic: Impacts on international business relationships and corporate strategy. Robert Denemark, professor, International Relations – Global geopolitical implications and international relations perspectives. Stuart Kaufman, professor, Political Science and International Relations – Historical context and comparative analysis of past U.S. trade policies. Journalists who would like to speak with these experts can click on their profiles or email mediarelations@udel.edu.