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Outbreak Watch: July 17, 2026
Outbreak Watch: Get the latest updates on Ebola, New World screwworm, U.S. cyclosporiasis, H5 avian influenza, and why disease surveillance matters.

Heather McSharry, PhD
4 days ago11 min read


Field Notes #14: Counterpoint
Why are vaccines easy for some diseases and elusive for others? Explore how pathogens like influenza, HIV, and malaria challenge prevention in different ways.

Heather McSharry, PhD
6 days ago6 min read


A Shot in the Dark: The Science That Outsmarted Smallpox
Discover how Edward Jenner's bold experiment transformed medicine, launched the science of vaccination, and helped eradicate smallpox in this episode of Infectious Dose exploring one of history's greatest public health turning points.

Heather McSharry, PhD
6 days ago21 min read


Field Notes #13: Close Quarters
What military outbreaks reveal about infectious disease, crowded environments, and the hidden design choices that shape health and vulnerability.

Heather McSharry, PhD
6 days ago5 min read


Holding the Line: How Prevention Became Military Strategy
Discover how infectious disease transformed military history in Holding the Line: How Prevention Became Military Strategy. From George Washington and Florence Nightingale to Walter Reed, military vaccination, COVID aboard the USS Theodore Roosevelt, and today's influenza outbreaks, explore the history of force health protection and preventive medicine.

Heather McSharry, PhD
Jul 819 min read


Field Notes #12: What Travels Between Wounds and Wights
Discover how wounds become chemical signals that attract parasites, predators, microbes, and other organisms. Plus the latest Ebola, Marburg, hantavirus, and New World screwworm outbreak updates.

Heather McSharry, PhD
Jul 15 min read


Field Notes #11: Nightfall
Field Notes #11: Nightfall explores why dusk is one of nature's busiest transitions, from mosquitoes and bats to owls and moths, plus the latest updates on Ebola, hantavirus, and New World screwworm.

Heather McSharry, PhD
Jul 15 min read


On the Fly: Lessons From a Screwworm
Podcast episode on New World screwworm: how sterile insect releases eradicated a flesh‑eating parasite from North America, why Texas is seeing new screwworm cases in 2026, and what this outbreak reveals about prevention and the consequences of disabling the public health infrastructure that protects us.

Heather McSharry, PhD
Jul 118 min read


Field Notes #10: Eavesdropping
Petrichor feels deeply human, but the smell of rain may not be for us at all. A look at geosmin, animal behavior, and the ecological signals hidden in summer storms.

Heather McSharry, PhD
Jun 175 min read


Listening for Rain: Microbes, Memories, and Summer Storms
Why can we smell rain? Explore the science of petrichor, geosmin, soil microbes, and the memories connected to summer storms in this immersive podcast episode.

Heather McSharry, PhD
Jun 175 min read


Field Notes #9: The Long Way Home
What follows us home from a walk in the woods? This issue of Field Notes explores summer ecosystems and the unseen exchanges between people and nature.

Heather McSharry, PhD
Jun 106 min read


The Tick, the Table, and the Timeline: How a Tick Bite Rewrites Dinner
How can a tick bite make someone allergic to red meat months later? Explore the mystery, science, diagnosis, and history of alpha-gal syndrome in this episode of Infectious Dose.

Heather McSharry, PhD
Jun 1027 min read


Field Notes #8: Standing Watch
Standing Watch On the quiet machinery of survival Field Notes is where I take one idea from the episode—something that feels like a hinge point—and follow it to see what it reveals. If you want the full story, you can read or listen to the episode here. In the Margins When people think about public health, they usually picture things with obvious health labels. Vaccination campaigns. Disease surveillance. Health departments. Epidemiologists tracking outbreaks. They rarely pic

Heather McSharry, PhD
Jun 44 min read


Storm Surge: Microbes in the Wake of a Hurricane
Hurricanes don't create pathogens—they change exposure. Learn about floodwater infections, mold, mosquitoes, food safety, and hurricane preparedness in this Infectious Dose episode.

Heather McSharry, PhD
Jun 311 min read


Field Notes #7: Exposure Archives
Exposure Archives On the histories infection writes into us Field Notes is where I take one idea from the episode—something that feels like a hinge point—and follow it to see what it reveals. If you want the full story, you can read or listen to the episode here. In the Margins There’s a moment in this episode that won’t let go of me. Not the courtroom, not the verdict. It’s the nurse in Louisiana, at home, half-asleep, the familiar weight of someone she’d trusted for a decad

Heather McSharry, PhD
May 275 min read


Recorded in Blood: When True Crime Goes Viral
Outbreak After Dark explores the true crime case that brought forensic virology into court and asked: can a virus testify?

Heather McSharry, PhD
May 275 min read


Field Notes #6: Blind Spots
Blind Spots On viruses, visibility, and the signals we miss Field Notes is where I take one idea from the episode—something that feels like a hinge point—and follow it to see what it reveals. If you want the full story, you can read or listen to the episode here. In the Margins Somewhere in almost every Ebola outbreak, there’s a moment when the virus is already there, but the tools built to recognize it are still looking for something else. In Yambuku in 1976, clinicians thou

Heather McSharry, PhD
May 205 min read


Containing Ebola: Fear, Caregiving, and Outbreak Response
What is Ebola really — and how does it spread? This episode explores Ebola transmission, pathogenesis, outbreak history, and the 2026 Bundibugyo Ebola outbreak in DRC and Uganda.

Heather McSharry, PhD
May 2031 min read


Field Notes #5: Walking the Line
Walking the Line On risk, reassurance, and the lines that divide us Field Notes is where I take one idea from the episode—something that feels like a hinge point—and follow it to see what it reveals. If you want the full story, you can read or listen to the episode here. In the Margins Somewhere during an outbreak investigation, a contact tracer has to decide whether someone “counts” as an exposure. Two passengers sat beside the same infected person on a flight. One was there

Heather McSharry, PhD
May 133 min read


Field Notes #4: In Memoriam
In Memoriam On uncertainty, memory, and the stories outbreaks inherit Field Notes is where I take one idea from the episode—something that feels like a hinge point—and follow it to see what it reveals. If you want the full story, you can read or listen to the episode here. In the Margins One of the hardest things about modern outbreak communication is that people no longer hear scientific language in isolation. They hear it through memory. “Airborne” is no longer just a techn

Heather McSharry, PhD
May 64 min read
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