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Infectous Dose Episodes


Protection, Interrupted: How Chasing Sterilizing Immunity Fails the Herd
Heather unpacks the seductive myth of sterilizing immunity and the damage it’s done to public trust, vaccine policy, and our understanding of what vaccine success really looks like.

Heather McSharry, PhD
Jun 18, 202516 min read


No Name, No Mercy: The Hantavirus That Killed Betsy Arakawa
Heather delves into the story of Sin Nombre virus and the disease it causes, Hantavirus Pulmonary Syndrome. From its rodent origins and rapid progression to the public health response, Learn how it rewrote the rules of infectious disease in North America—and why it remains a threat, even in obscurity.

Heather McSharry, PhD
Jun 11, 202541 min read


Episode 13: Un-Vaccinated - the Global Measles Emergency
Heather gives updates on the global 2025 measles outbreaks, answers listener questions, and debunks the deadly lies from RFK Jr.

Heather McSharry, PhD
Jun 4, 202536 min read


Expecting Protection: Building Vaccine Confidence for Moms-to-Be
Pregnant and wondering which vaccines are safe? Heather separates myths from facts & shares exactly what science says about vaccine safety during pregnancy—because you and your baby deserve the best protection!

Heather McSharry, PhD
May 28, 202529 min read


Close Quarters, Silent Threat - Invasive Meningococcal Disease in Dorms and Barracks
Heather dives deep into a bacterium that many carry unknowingly, but can transform from harmless passenger to lethal invader, especially for young adults.

Heather McSharry, PhD
May 21, 202528 min read


Inside the vial: the truth about what’s actually in vaccines
Heather clarifies what components vaccines actually contain and how we know they are safe.

Heather McSharry, PhD
May 14, 202524 min read


Sleeper Cells - How Anthrax Hides, Strikes, and Could One Day Heal
In the anthrax episode, Heather takes you through the fascinating science of this terrifying microbe.

Heather McSharry, PhD
May 7, 202522 min read


The Vaccine Court and Adjudication of Autism Cases
Heather digs in to the truth about the vaccine court and how its history of claims supports that vaccines are safe!

Heather McSharry, PhD
Apr 29, 202523 min read


Fowl on the Play as Bird Flu Heats Up
Is the bird flu’s resurgence a warning sign worth heeding? Heather digs into the science, the stakes, and what this latest avian alarm could mean for global health.

Heather McSharry, PhD
Apr 23, 202515 min read


Too Many Vaccines Too Soon?
Heather goes in-depth on why the current vaccine schedule is safe and effective.

Heather McSharry, PhD
Apr 15, 202514 min read


The Monster That is Measles
Everything you need to know about measles.

Heather McSharry, PhD
Apr 9, 202517 min read


Andrew Wakefield and the System That Failed
How a corrupt doctor hurt children & parents to make money & created a legacy of fear.

Heather McSharry, PhD
Apr 8, 202517 min read


Vaccines Do NOT Cause Autism
Heather discusses the data showing zero correlation between vaccines and autism.

Heather McSharry, PhD
Apr 8, 202515 min read


Vaccine Safety 2: Other COVID-19 Vaccine Platforms
Heather provides an in-depth discussion on the COVID-19 vaccine platforms other than mRNA

Heather McSharry, PhD
Apr 7, 20251 min read


COVID-19 mRNA Vaccines Explained
This episode has been updated to include current data on immunity, safety, effectiveness, long covid, myocarditis, and more. This is the original Pathogen Perspectives Episode rebranded for Infectious Dose. In this episode, Heather provides an in-depth discussion on the COVID-19 mRNA vaccines authorized for emergency use in the US. She covers: · What is mRNA · How mRNA vaccines work · How we know they are safe · Why they cannot change your DNA ·

Heather McSharry, PhD
Apr 7, 202521 min read
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