The talks from the researchers in the field of infectious diseases. The podcast is hosted by South Texas Center for Emerging Infectious Diseases (STCEID).
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Eradication of the Guinea Worm with Adam Weiss
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Guinea worm infections have been plaguing mankind throughout recorded history. The Carter Center took the lead in the guinea worm eradication effort in the 1980’s, when there were over 3 million cases per year. Through concentrated effort, this disease is on the brink of extinction, with only 14 human cases in 2023! Adam Weiss, MPH, is the director…
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CHARMing the Superbugs with Dr. Victor Nizet
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Antibiotic resistant bacteria are threatening modern society by making antibiotics obsolete. Dr. Nizet is a Professor and Vice Chair in the Department of Pediatrics at UCSD, as well as the faculty lead for the UCSD Collaborative to Halt Antibiotic-Resistant Microbes (CHARM). His laboratory studies how the human immune system interacts with microbia…
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300 Days in Space with Astronaut Dr. Kate Rubins
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Houston, we definitely do NOT have a problem…with interviewing Dr. Kate Rubins, NASA astronaut. Dr. Rubins is a virologist who has spent over 300 days in space, performing experiments aboard the International Space Station, where she was the first person to sequence DNA in space. We caught up with Dr. Rubins at the Neutral Buoyancy Lab in Houston, …
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Gut on a Chip: Human Gastrointestinal Organoids with Dr. Hyun Jung Kim
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Dr. Hyun Jung Kim, an Assistant Professor at Cleveland Clinic specializes in coaxing human cultured cells to differentiate and form tissues resembling the gastrointestinal tract, in order to study microbe-GI interactions. Dr. Kim discusses his surprising discovery of how common immortalized cultured cells can differentiate and form something that r…
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Plague, Anthrax, and ASM, Oh My! With ASM president Virginia Miller and president-elect Theresa Koehler
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Plague and anthrax are feared diseases due to high mortality rates following pulmonary exposure, and both are considered potential bioweapons. Dr. Virginia Miller, professor at the University of North Carolina at Chapel Hill and ASM President, studies plague, as well as other Gram negative bacteria. Dr. Theresa Koehler, emeritus professor at UTHeal…
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Microbes to the Rescue! Bioremediation with Dr. John Coates
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Dr. John Coates, a professor at the University of California Berkeley specializes in environmental microbiology and how microbes can be utilized to resolve problems in industry. microTalk caught up with Dr. Coates at the ASMicrobe conference in Houston and discussed his research in applied and environmental microbiology. Dr. Coates discusses an une…
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The Evolution Revolution with Dr. Vaughn Cooper
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The study of evolution has experienced a tremendous revolution with the advances in current sequencing technologies enabling e.g. rapid whole genome sequencing. Dr. Vaughn Cooper, a professor at the University of Pittsburgh who studies evolution in microbes, has taken advantage of these technologies to delve into how microorganisms adapt and evolve…
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Adversary o’ Malaria with Dr. Debopam Chakrabarti
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Malaria continues to have a significant impact on humans. The Plasmodium parasites are transmitted through mosquito bites, and the disease has a tremendous impact on global health. Dr. Debopam Chakrabarti, a professor at the University of Central Florida who specializes in malaria. Dr. Chakrabarti discusses the history of the search for antimalaria…
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“Ex” Marks the Spot: Exosomes with Ramin Hakami
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Exosomes are small vesicles that that facilitate communication between eukaryotic cells. They resemble mini-cells, and act like carrier pigeons, trafficking various “payloads” among cells. Dr. Ramin Hakami is a Professor of Microbiology at George Mason University. Dr. Hakami studies how infectious diseases are modulated by exosome signaling. Dr. Ha…
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Coxiella burnettii causes Q Fever, a zoonotic disease that is rarely acquired by humans. But Q Fever has a history of being developed as a bioweapon because of its ability to be spread by aerosols and cause debilitating but not lethal disease. Dr. Stacey Gilk is an Associate Professor at the University of Nebraska Medical Center who studies Coxiell…
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Chytridiomycosis: Amphibians and Fungal Disease with Anat Belasen
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There have been dramatic declines in amphibian populations around the world, and one of the culprits is the disease Chytridiomycosis. This is a skin disease of amphibians caused by two different species of Batrachochytrium fungi, and it has decimated frog and salamander populations and even driven some to extinction. Dr. Anat Belasen is a post-doct…
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The Largest Bacterium, Thiomargarita Magnifica, with Jean-Marie Volland
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Microbiology textbooks teach that bacteria are so small that they cannot be seen without a microscope, and that they do not contain organelles or a nucleus. Then along comes Thiomargarita magnifica and smashes this dogma. T. magnifica is a giant bacterium that reaches 2 cm in length and can be easily seen with the naked eye. These bacteria, about t…
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Vibrio vulnificus (and other Vibrios) with Salvador Almagro-Moreno
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Vibrios are marine bacteria that live in aquatic environments with a lot of other microbes, and occasionally a particular strain will arise that can cause serious disease in humans and can spread through the population in pandemics. V. cholerae causes large pandemics of cholera, and V. vulnificus causes sporadic cases of necrotizing fasciitis. Geno…
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Get a Whiff of Cdiff: A Discussion About C. difficile with Vincent Young
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One of the consequences of the “Antibiotic Era” has been the increased occurrence of infections caused by Clostridioides difficile, also known as “Cdiff”, which in some cases can be life-threatening. Antibiotics alter the microbes that live in the gastrointestinal tract (the “microbiome”) allowing Cdiff to thrive and cause disease. Dr. Vincent Youn…
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A Career in the Time of Cholera: A Discussion with ASM Lifetime Achievement Award Winner John Mekalanos
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Dr. John Mekalanos (Harvard Medical School) has devoted his career to the study of bacterial pathogens, with a special emphasis to understanding Vibrio cholerae, the bacterium that causes the deadly disease cholera. And what an amazingly productive research path he has followed, from the discovery and characterization of the regulon that controls V…
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"Crypto" currency: Cryptosporidium with Boris Striepen
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Watch out for this kind of “Crypto” Currency: Cryptosporidium is a parasite that causes diarrheal disease in humans. Cryptosporidiosis is a common cause of waterborne disease in the U.S., and responsible for serious and potentially fatal infections in HIV positive individuals and malnourished infants. Dr. Boris Striepen is a Professor of Pathobiolo…
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067: The Chicken Runs: Campylobacter Diarrhea with David Hendrixson
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Campylobacter jejuni is a major cause of diarrheal disease in humans. However, C. jejuni is also naturally found in chickens and doesn’t cause them any problems, so people frequently get sick from eating undercooked chicken. Dr. David Hendrixson is a Professor of Microbiology at the UT Southwestern Medical Center. Dr. Hendrixson studies C. jejuni a…
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066: The Eyes Have It: Corneal Infections with Eric Pearlman
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Our eyes are one of the most sensitive areas on our bodies, and they are constantly bathed in microbes, and yet we rarely get eye infections. However, certain microbes can take advantage of minor injuries to the eye and cause very serious infections that can lead to blindness. Dr. Eric Pearlman is a Professor of Ophthalmology at the University of C…
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065: Cheese Please! The Cheese Microbiome with Rachel Dutton
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Cheese is delicious, and also the product of a complex mixture of microbes. Different communities of microbes produce the wide variety of cheeses made around the world. Dr. Rachel Dutton is an Assistant Professor at the University of California San Diego who studies cheese microbiomes. Dr. Dutton talks about how cheese is made, how the cheese micro…
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064: Fun(gus) in the Sun(gus): Fungal Infections with Neil Clancy
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Candida albicans is the most common cause of fungal disease in the United States. C. albicans can cause serious and often fatal systemic infections, especially in hospitalized patients with underlying conditions. Dr. Cornelius Clancy is an Associate Professor at the University of Pittsburgh and the Director of the XDR Pathogen Lab. Dr. Clancy talks…
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063: Tick Schtick: Lyme Disease with Tim Sellati
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Lyme Disease is the most common vector-borne disease in the United States. The bacterium Borrelia burgdorferi is transmitted to humans through the bite of a deer tick, and can lead to the debilitating disease that most commonly is associated with arthritis, but can also cause heart and neurological problems. Dr. Tim Sellati is the Chief Scientific …
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062: The Rules of Attraction: Bacterial Magnetosomes with Arash Komeili
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Some bacteria have the amazing ability to orient themselves using the earth’s magnetic field, due to the presence of an intracellular organelle called the magnetosome, which are estimated to have evolved 3 billion years ago. Dr. Arash Komeili is a Professor at the University of California Berkeley who studies bacterial magnetosomes. Dr. Komeili tal…
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061: TB or not TB? That is the Question… for Bill Jacobs
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Tuberculosis (TB) remains one of the most prevalent infectious diseases in the world, with approximately 10 million people becoming sick and 1.5 million people dying every year from Mycobacterium tuberculosis infection. Dr. William Jacobs is a Professor at the Albert Einstein College of Medicine and member of the National Academy of Sciences who st…
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060: Geezer Germs: Geriatric Bacteria with Steve Finkel
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What happens when a bacterium gets old? Continuous culture of bacteria without any added nutrients can reveal the dynamics of “old” bacteria. Dr. Steve Finkel is a Professor at University of Southern California who studies what happens beyond “stationary phase” in bacterial cultures. Finkel studies the Growth Advantage in Stationary Phase (GASP) ph…
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059: All Hail Females: Women in Science with Joan Bennett
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Despite comprising half of the population, women are underrepresented as scientific professionals. The reasons for underrepresentation are multi-factorial. Dr. Joan Bennett is a Professor at Rutgers University who studies fungi; she is a past president of the American Society of Microbiology, and a member of the National Academy of Sciences. Throug…
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058: Biotechnology Ideology: Genomics Technologies with Joe DeRisi
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Genomics-based technologies have revolutionized science. From microarrays to next-generation sequencing, genomics technologies are having a tremendous positive impact on all aspects of human health. Dr. Joe DeRisi is a professor at the University of California San Francisco and co-president of the Chan Zuckerberg Biohub. DeRisi has been at the fore…
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057: Undone by Fungi Again: The Mycobiome with Mahmoud Ghannoum
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One reason is because the overwhelming bacterial members of the microbiome keep the fungi in check. Dr. Mahmoud Ghannoum is a professor at Case Western University and the director of the Center for Medical Mycology, who studies fungal pathogens, such as Candida, Aspergillus, and Cryptococcus. Ghannoum talks about how changes in the bacterial microb…
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056: Lilliputian Evolution: Bacterial Evolution with Stanley Maloy
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The presence of bacterial toxins in a remote coral reef got Stanley Maloy thinking about the evolution of pathogens, and where “emerging diseases” come from. Dr. Stanley Maloy is a professor at San Diego State University who studies Salmonella, which causes gastrointestinal illness as well as more systemic disease in various hosts. He is the associ…
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055: The Age of Phage: Phage Therapy with Graham Hatfull
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Bacteriophages (“phages”), or bacterial viruses, are the most abundant biological entity on the planet, and the microbial world is shaped by these predators and parasites. The ability of bacteriophages to specifically target and kill their prey is being explored as an alternate therapy to antibiotics against various bacterial diseases. Dr. Graham H…
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054: Urine Trouble: Urinary Tract Infections with Harry Mobley
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Frequent urges to go “number one” can be the symptom of a urinary tract infection (UTI), one of the most common types of bacterial infections in humans. Usually the treatment of UTIs is quick and effective, but sometimes the organisms causing the infection can get into the kidneys and cause serious and even fatal disease. Dr. Harry Mobley is a prof…
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053: Vibri-Oh-No! - “Flesh Eating” Vibrios with Karla Satchell
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Summer brings warm beach weather, and with it come gruesome news reports of “flesh eating disease” that people catch from the ocean. Vibrio vulnificus is a marine bacterium that prefers warmer seawater, and it can infect wounds and cause necrotizing fasciitis, also known as “flesh eating disease”, that can rapidly turn into a fatal infection. Dr. K…
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052: Goodbye Guinea Worm: Guinea Worm Eradication with Adam Weiss
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One of the more gruesome parasitic infections is that of the guinea worm: these 3 feet long worms typically emerge from painful boils in the feet to release eggs, and have to be slowly wound onto a stick over the course of days to weeks to pull them them out of the infected person’s leg. This debilitating infection afflicted 3.5 million people per …
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051: Microbes in Hot Water: Climate Change with Sanghoon Kang
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The earth is warming up, and many aspects of life on earth are changing with the changing climate. Increased global temperature has multifactorial impacts on living organisms, including microbes. Dr. Sanghoon Kang is an assistant professor at Baylor University who studies climate change and its effects on microbial communities. Dr. Kang talks about…
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050: Into the Matrix: Fungal Biofilms with David Andes
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Candida albicans is the most common fungal infection of humans. C. albicans can cause superficial infections like thrush or vaginitis when it overgrows within healthy individuals, but it causes much more serious disease when it infects immunocompromised individuals. C. albicans can form a matrix-encased biofilm on indwelling medical devices that se…
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049: Trivia About Chlamydia: Sexually Transmitted Disease with Mary Weber
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Chlamydia trachomatis is the most common sexually transmitted bacterial disease in the U.S. Chlamydia infections in women can lead to pelvic inflammatory disease, and in the worst cases ectopic pregnancy or sterility. C. trachomatis are obligate intracellular bacteria, which has made studying the genetics of virulence particularly difficult. Dr. Ma…
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048: Zebrafish in the Time of Cholera: Vibrio cholerae with Brian Hammer
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Vibrio cholerae causes a severe gastrointestinal illness that leads to massive fluid loss that can be fatal. These bacteria are normally found in the marine environment, but they can spread rapidly through human populations and cause large epidemics. V. cholerae are able to coordinate their activities by “talking” to each other through quorum sensi…
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047: Urinary Commentary: UTIs and Proteus mirabilis with Karine Gibbs
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Proteus mirabilis is a common cause of Urinary Tract Infections. These bacteria are found within the gastrointestinal tract, but they are sometimes able to ascend the urinary tract and cause bladder infections. One of the amazing attributes of Proteus is its ability to crawl across Petri dishes, referred to as swarming. Dr. Karine Gibbs is an assoc…
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046: The Scoop on Whoop: Bordetella with Jeff Miller
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Dr. Jeff Miller has been studying Bordetella pertussis, the bacterium that causes whooping cough in humans, for over three decades, and he keeps uncovering novel aspects of the pathogenesis of this organism. B. pertussis still causes outbreaks of human disease, and Dr. Miller has unraveled in amazing detail the signal transduction system that leads…
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045: Tiptoe Through the Crypto: Cryptococcus with Paul de Figueiredo
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The devastation of the immune system that occurs during AIDS renders patients highly susceptible to a number of infections that a functioning immune system can easily control. One of the most common infections in AIDS patients is Cryptococcosis, caused by a fungus. Cryptococcus neoformans can infect immunocompromised individuals through the lungs a…
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044: Giant Viruses, Rickettsia, and Whipple, Oh My! A Discussion with Didier Raoult
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Dr. Didier Raoult considers himself a “microbe fisher”, always “fishing” to discover new microbes. He says that in order to fish successfully, you need to first create the correct fishing pole (tools), and then fish in places where no one else is fishing. Dr. Raoult is the Director of the Mediterranean Infection Foundation at the Aix-Marseille Univ…
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043: Native Alaskan Perspectives in Microbiology with Kat Milligan-Myhre
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Dr. Kat Milligan-Myhre was raised in a remote Alaska Native community above the Arctic Circle, and was the first person from her village to obtain a PhD. in biological sciences. She is now a faculty member at the University of Alaska-Anchorage. Her research focuses on determining the extent that host genes control host-microbe interactions, utilizi…
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042: Undone by Fungi: Mucormycosis with Ashraf Ibrahim
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There are increasing numbers of people with immunocompromised conditions that make them more susceptible to a variety of diseases, including fungal diseases. A group of fungi in the order Mucorales can cause a potentially fatal disease called Mucormycosis in immunocompromised and diabetic individuals. This is a rare disease that is difficult to tre…
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041: There’s a Germ in my Worm: Bacterial-driven Metamorphosis with Nick Shikuma
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Many organisms metamorphose from a larvae into an adult, for example a caterpillar metamorphosing into a butterfly, but some animals require bacteria in order to undergo this transition. This amazing bacterial-stimulated morphological transition is fairly widespread among different marine animals, like sponges, corals, and sea urchins, but in most …
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040: Public Health in the Time of Cholera: Enteric Disease Intervention with Christine Marie George
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Cholera is a severe diarrheal disease caused by the bacterium Vibrio cholerae that can spread among human populations in large epidemics when water quality is poor. Dr. Christine Marie George is an Associate Professor in the department of International Health and Environmental Health Engineering at Johns Hopkins School of Public Health who works to…
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039: Let’s Veto Mosquitoes: Malaria with Gunnar Mair
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The malaria parasite, Plasmodium, is transmitted to people through mosquito bites. The parasite needs to infect humans to undergo the morphologic transitions important for its lifecycle, but it also needs to infect mosquitoes to be able to complete its lifecycle. Dr. Gunnar Mair is an Assistant Professor at Iowa State University who studies mosquit…
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038: Babbling Bacteria: A Discussion About Quorum Sensing with Marvin Whiteley
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Bacteria talk to each other using molecules that allow them to coordinate group behaviors, which has been termed “quorum sensing”. A number of bacteria utilize quorum sensing to form gangs that coordinate beneficial behaviors such as symbiotic light production, as well as detrimental behaviors such as attacking their host. Dr. Marvin Whiteley is a …
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037: Coral Reefs in Crisis! A Discussion with Rebecca Vega-Thurber
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The magnificent coral reefs of the world are dying! These fantastic underwater living structures that support entire ecosystems are undergoing massive die-offs that have decimated coral reefs all over the globe. Tropical coral reefs rely on a symbiosis between the coral polyp and a photosynthetic algae, and when this symbiosis is disrupted, the cor…
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036: Viruses from Heaven and Hell: A Discussion with Ken Stedman
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Earth’s most abundant biological entities are viruses, and they can be found everywhere where there are living organisms, including extreme (hellish) environments with e.g. low pH, high temperature, etc. Dr. Ken Stedman is a professor at Portland State University and one of the founders of the Center for Life in Extreme Environments. Dr. Stedman st…
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035: Flip-flops and Surfboards made from Algae? Renewable algae-derived biomaterials with Steve Mayfield
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Dr. Steve Mayfield is a professor at the University of California San Diego and the Director of the California Center for Algae Biotechnology. Algae are amazing microorganisms, and Dr. Mayfield says that the more you know about algae, the more you like them. Algae are extremely important to life on earth: they changed the atmosphere of the planet t…
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034: Disease Expertise with the Big Cheese: CDC Deputy Director Anne Schuchat
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The Centers for Disease Control and Prevention is on the front lines of the war against infectious diseases, and Anne Schuchat, M.D. has been the Deputy Director of CDC since 2015. She has been at the CDC since 1988 and has served in a variety of leadership roles, including stints as the acting director in 2017 and 2018. Dr. Schuchat has played key…
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