The Deadliest Ally | America in Pursuit

Summary

Podcast Summary: Throughline – "The Deadliest Ally | America in Pursuit"

Original Air Date: January 20, 2026
Hosts: Ramtin Arablouei, Rund Abdelfatah
Guest: Dr. Tim Weingart

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Overview:

The episode kicks off the special series "America in Pursuit," which examines stories of life, liberty, and the pursuit of happiness in America’s history. This installment takes a surprising historical angle, asking: What if the American Revolution’s outcome was not just the result of bold generals but the work of one of humanity’s smallest—and most lethal—allies: the mosquito? The hosts and guest Dr. Tim Weingart delve into how malaria shaped the course of the Revolutionary War, especially in the decisive battles in the South, ultimately tipping the balance in favor of the American colonists.

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Key Discussion Points & Insights

The Unseen Ally in the American Revolution

• Opening up the Narrative:
  • The traditional story of the Revolution highlights anger over taxes, the Boston Tea Party, and military tactics. But the episode spotlights an oft-overlooked factor: the Anopheles mosquito and the deadly malaria it spread.
  • [00:20] Ramtin Arablouei introduces the angle:

    “…there’s a big or should I say small part of this story that’s rarely mentioned. Mosquitoes.”

• The Deadliest Animal:
  • [01:22] Dr. Tim Weingart:

    “It’s still the animal that kills more human beings on the planet than any other animal to this day. And that’s including other humans.”

The Southern Campaign & Malaria

• Shift in British Strategy:
  • By 1778, the British, frustrated by Washington’s refusal to fight a decisive northern battle, move their campaign to the American South, hoping for a swift victory.
  • [04:09] Ramtin Arablouei:

    “So they changed their strategy.”

• British Soldiers' Vulnerability:
  • Many British troops, recruited from northern England and Scotland, had not been exposed—or “seasoned”—to the strains of malaria prevalent in the Southern colonies.
  • [04:40] Dr. Weingart explains the concept of 'seasoning':

    “Generally speaking, the more you contract malaria, the less severe the symptoms are and the less likelihood of dying. So the American soldiers have been seasoned to their colonial malaria…where these British soldiers come over, they haven't been seasoned to their own English malaria, let alone colonial stew of malaria.”

The Battle of Yorktown: Malaria’s Decisive Role

• Cornwallis’ Dilemma:
  • General Charles Cornwallis, leading the British forces, finds his troops constantly sick and desperately searches for ‘healthy’ ground, based on locals’ advice.
  • [06:02] Cornwallis’s own words:

    “With a third of my army sick and wounded...I thought it was time to look for some place of rest and refitment.”

  • [06:17] Dr. Weingart:

    “He says, the malaria is ruining my army...”

• The Trap at Yorktown:
  • Cornwallis is ordered to retreat and fortify Yorktown—a region with marshland perfect for the Anopheles mosquito.
  • [07:28] Dr. Weingart:

    “Yorktown…is rice paddies, it’s marshland...This is in August, which is prime mosquito time in prime mosquito country…”

• Malaria Devastates British Forces:
  • By the time of surrender in October 1781, most British soldiers are incapacitated.
  • [08:04] Cornwallis details his defeat:

    “I have the mortification to inform your excellency that I have been forced to give up the post and to surrender the troops...the troops being much weakened by sickness…”

  • [08:31] Cornwallis reiterates in correspondence:

    “Our numbers had been diminished by the enemy’s fire, but particularly by sickness.”

  • [08:37] Dr. Weingart quantifies the devastation:

    “He only has 35% of his troops, roughly, who are able to even stand up...The rest are either sick, dead, or dying of malaria.”

Notable Analysis and Historical Reflection

• Mosquito as “Founding Mother”:
  • [09:08] Dr. Weingart humorously concludes:

    “So in a way, the Anopheles mosquito [is] the founding mother of the United States. And she deserves to have her nice proboscis face tucked in between Washington and Jefferson on Mount Rushmore.”

• Enduring Power of Disease:
  • The episode closes by connecting the lesson to the present: Disease, and the vectors that carry it, continue to shape human history.
  • [09:43] Dr. Weingart’s warning:

    “Disease is a constant baggage to human migration, whether that be war, trade, travel, it doesn't matter. It's a universal creature and has been for forever…Her reach and her historical impact and influence kind of cross both time and space.”

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Notable Quotes & Memorable Moments

• [01:58] Dr. Weingart:
  “We like to think we get to make our own history, that we did this as human beings. And that's not necessarily the case.”
• [06:02] Cornwallis (quoted letter):
  “With a third of my army sick and wounded...it was time to look for some place of rest and refitment.”
• [09:08] Dr. Weingart:
  “The Anopheles mosquito, the founding mother of the United States…deserves to have her nice proboscis face tucked in between Washington and Jefferson on Mount Rushmore.”
• [09:43] Dr. Weingart:
  “Her reach and her historical impact and influence cross both time and space...at every stage, the mosquito and these pathogens have essentially been able to circumvent our frontline weapons to continue what they're pre-wired to do…”

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Important Timestamps

• 00:20: Introduction to the theme—mosquitoes as an overlooked force in history
• 01:22 – 02:05: Dr. Weingart introduces the Anopheles mosquito and its impact
• 03:09 – 04:09: Shift to the Southern campaign, setting the stage for malaria’s influence
• 04:40 – 05:31: Explanation of “seasoning” and why British troops were especially vulnerable
• 06:02 – 07:16: Cornwallis’s struggles and desperate search for a healthy camp
• 07:28 – 08:54: Yorktown siege; malaria devastates the British; Cornwallis surrenders
• 09:08 – 09:43: Reflection on the mosquito’s historical impact and Dr. Weingart’s “founding mother” quip

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Closing Thoughts

The episode compellingly reframes the American Revolution, showing how the outcome was shaped not only by strategy and bravery but by the humble mosquito and the disease it carried. Through expert storytelling and vivid historical detail, Throughline underscores the unpredictable wild cards—like malaria—that can alter the course of nations.

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Next Episode Teaser:

• [11:16] Dr. Weingart hints at the next episode’s subject: the role of the post office as “the nervous system of the Republic.”

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For further listening, check out Throughline’s full-length episode “Buzzkill,” as suggested by the hosts.

Transcript

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[Ramtin Arablouei]

This is America in Pursuit, a limited run series from Thuline and npr. Ramini I'm Ramtin Arablouei. Each week we bring you stories about life, liberty and the pursuit of happiness in america that began 250 years ago this year when those rights, unalienable rights, were laid out in the Declaration of Independence. But Americans had to fight for them, beginning, of course, with an all out revolutionary war that lasted years. So for our first episode, we're going to go back into the archives to bring you a story from that revolutionary fight, which you probably know the basics of. People were mad about taxes and were tired of answering to a king. The Boston Tea Party broke out. George Washington and his crew took up arms and defeated the Imperial British army with unconventional tactics. But there's a big or should I say small part of this story that's rarely mentioned. Mosquitoes.

[Dr. Tim Weingart]

It's still the animal that kills more human beings on the planet than any other animal to this day. And that's including other humans.

[Ramtin Arablouei]

That's Dr. Tim Weingart.

[Dr. Tim Weingart]

I'm a history professor at Colorado Mesa University, also the head coach of the hockey team, being Canadian. And I wrote the book the Mosquito A Human History of Our Deadliest Predator.

[Ramtin Arablouei]

The specific mosquito we're talking about today is known as the Anopheles, a species of mosquito that thrives in marshes and swamps and is known for spreading malaria, a deadly disease that has changed the course of history in all kinds of ways.

[Dr. Tim Weingart]

We like to think we get to make our own history, that we did this as human beings. And that's not necessarily the case.

[Ramtin Arablouei]

We head to the battlefield with the Annapolis Mosquito. When we come back.

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[Ramtin Arablouei]

It's 1778, three years into the American Revolutionary War. The first half of the war was fought almost entirely in the North. George Washington and the Continental army were having mixed success and spent a lot of energy running from the British army, trying to buy more time.

[Dr. Tim Weingart]

The British are very upset that General Washington won't essentially commit to a decisive battle to end the war. And Washington knows he can't do this because he doesn't have anything. If he commits to a decisive battle and loses, the revolution's over. But as long as he can keep an army, however ill supplied and under equipped in the field, the British have to defeat and chase this army.

[Ramtin Arablouei]

All the while, he's desperately waiting for help to come.

[Dr. Tim Weingart]

He waits for his political lords essentially in the Continental Congress to get some supplies, get some allies, get some weapons, and hopefully get France on board. This is essentially playing cat and mouse and it frustrates the British.

[Ramtin Arablouei]

So they changed their strategy.

[Additional Announcer/Advertiser]

The British concentrated their forces in the southern colonies of Georgia, South Carolina, North Carolina and Virginia. Second in command of this campaign was General Charles Cornwallis, who landed in Charleston with 9,000 British soldiers.

[Dr. Tim Weingart]

And these soldiers come primarily from northern England. In Scotland, these British soldiers, so there was malaria in England, but these soldiers specifically are recruited from northern England and Scotland, away from the malarial Fenlands of England. So they're not what is called seasoned. What seasoning is. Essentially, the more you suffer, the less you suffer. Now, I don't suggest this as an inoculation strategy, but generally speaking, the more you can track malaria, the less severe the symptoms are and the less likelihood of dying. So the American soldiers have been seasoned to their colonial malaria. They've had malaria, they've been seasoned to it. Where these British soldiers come over, they haven't been seasoned to their own English malaria, let alone colonial stew of malaria.

[Additional Announcer/Advertiser]

And this new set of circumstances in the south forced Cornwallis to adopt some unusual tactics.

[Dr. Tim Weingart]

If you look at his campaign in the south in 1780, 1781, he is zigzagging all over the place. It is one of the strangest marches you've ever seen on a map. And so why is Cornwallis doing this? Is he running away from the Americans? Is he chasing the Americans? No, he's trying to fight, find a healthy spot for his troops.

[General Charles Cornwallis (quoted)]

With a third of my army sick and wounded, which I was obliged to carry in wagons or on horseback, the remainder without shoes and worn down with fatigue, I thought it was time to look for some place of rest and refitment.

[Dr. Tim Weingart]

And he says this repeatedly in his correspondences. He says, the malaria is ruining my army. And he's asking British loyalists in the southern colonies where there's a healthy spot. And because they're seizures, they say, oh, just go that way. And then he gets there and his troops are cut to pieces by malaria again.

[General Charles Cornwallis (quoted)]

I am now employed in disposing of the sick and wounded and in procuring supplies of all kinds to put the troops into a proper state to take the field. I am likewise impatiently looking out for the expected reinforcement from Europe to enable me either to act offensively or, or even to maintain myself in the upper parts of the country, where alone I can hope to reserve the troops from the fatal sickness which so nearly ruined the army last autumn. April 10, 1781.

[Ramtin Arablouei]

As Cornwallis was running around looking for a safe, mosquito free spot for his troops, he got an order from his superiors to retreat and and fortify at the port of Yorktown in Virginia.

[Dr. Tim Weingart]

Yorktown is a little hamlet situated in the tidewater estuaries between the James and York rivers. Essentially, it's rice paddies, it's marshland. So he holes up in Yorktown. French navy comes. They're eventually joined by general Washington and the Americans, and they ensnare the British in Yorktown. This is in August, which is prime mosquito time in prime mosquito country in these marshlands surrounding Yorkt.

[Ramtin Arablouei]

His army was decimated, and in October, general Cornwallis surrendered.

[General Charles Cornwallis (quoted)]

I have the mortification to inform your excellency that I have been forced to give up the post and to surrender the troops under my command, the troops being much weakened by sickness as well as by the fire of the besiegers.

[Ramtin Arablouei]

In his correspondences, Cornwallis lays some of the blame for his surrender on malaria.

[General Charles Cornwallis (quoted)]

Our numbers had been diminished by the enemy's fire, but particularly by sickness.

[Dr. Tim Weingart]

He's like, I don't have anybody who can even stand up to fight. He only has 35% of his troops, roughly who are able to even stand up.

[General Charles Cornwallis (quoted)]

Our force diminish daily by sickness to little more than 3,200 rank and file fit for duty.

[Dr. Tim Weingart]

The rest are either sick, dead or dying of malaria.

[Ramtin Arablouei]

The siege of Yorktown was the final battle in the war between the colonies and great Britain, opening the path for the formation of the United States.

[Dr. Tim Weingart]

So in a way, Deanophyllis mosquito, the founding mother of the United States, and she deserves to have her nice proboscis face tucked in between Washington and Jefferson on Mount Rushmore.

[Additional Announcer/Advertiser]

Our founding mother, the mosquito, looms large over the history of humanity. And as Tim told us, her reign is not limited to our past. She may completely transform our future.

[Dr. Tim Weingart]

Human beings are crisscrossing the planet for trade travel business at record rates to record numbers of destinations in record numbers everywhere. Disease is a constant baggage to human migration, whether that be war, trade, travel, it doesn't matter. It's a universal creature and has been for forever. Essentially, her reach and her historical impact and influence kind of cross both time and space. Time is kind of irrelevant to her reach because at every stage the mosquito and these pathogens have essentially been able to circumvent our frontline weapons to continue what they're pre wired to do, and that's simply reproduce. So we are constantly trying new and innovative techniques to break this eternal stalemate that we've had with our deadliest enemy and deadliest predator.

[Ramtin Arablouei]

That's it for this week's episode of America in Pursuit, a special series from Throughline and npr. If you want to learn more about the role mosquitoes have played in shaping history, check out Throughline's full length episode called Buzzkill. And make sure to join us next Tuesday. When the American revolutionaries tried to figure out how to build a new nation and a new government, relying a lot on something you probably wouldn't expect, the.

[Dr. Tim Weingart]

Post office, it was the nervous system of the Republic.

[Ramtin Arablouei]

That's next time. Don't miss it.

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