Parasites Without Borders

TWiV 1302: Clinical update with Dr. Daniel Griffin 🪱 Dr. Griffin and Vincent Racaniello talk about the health misconceptions that RFK Jr. continues to perpetuate and how to combat them and the first cases of highly pathogenic influenza in the California elephant seal population. 📺 bit.ly/4ufFHkz

Parasitic Diseases Lectures #22: Pinworm 🪱 Dickson and Daniel discuss pinworm infection caused by Enterobius vermicularis. 📺 bit.ly/4aJZu2G

The Big Red Book made its way to Brazil to the hands of João Vinicius Lira da Silva, a medical student at Federal University of Rio Grande do Norte (UFRN). 📕

We’re happy that you now have a hard copy of the book, João. And good luck in your studies!

Infectious Disease Puscast #101 🪱 On episode #101 of the Infectious Disease Puscast, Daniel and Sara review the infectious disease literature for the weeks of 2/12 - 2/25/26. 📺 bit.ly/4cW85BR

Arthur Looss, Ph.D. (1861–1923) 🔬 Looss completed the description of the life cycle of Ancylostoma duodenale by accidentally spilling a sample of hookworm larvae on his hand while trying to administer them to guinea pigs.

Pg 327 📕 Parasitic Diseases, 8th Ed. parasiteswithoutborders.com/books

Multiplication within the human host is the rule for protozoans, unlike most helminth infections, which usually result in a single adult parasite.

Page 3 📕 Parasitic Diseases, Eighth Edition

Download a copy for free! parasiteswithoutborders.com/books

📸 CDC

TWiV 1300: Clinical update with Dr. Daniel Griffin 🩺 Dr. Griffin and Vincent Racaniello discuss several states and the governor of Pennsylvania suing HHS over changes in the childhood vaccination schedule, and more. 📺 bit.ly/4r3baDI

The leishmaniases are a group of diseases caused by protozoan parasites from more than 20 Leishmania species. An estimated 700,000 to 1 million new cases occur annually. Learn more and explore our free resources at parasiteswithoutborders.com

Life Cycle of Echinococcus granulosus 📕 Page 373 of Parasitic Diseases, Eighth Edition

Download for free! parasiteswithoutborders.com/books

Floating Doctors' volunteer teams travel by boat, packhorse, foot, and more to reach areas that critically need medical services. To donate to our Floating Doctors fundraiser, please visit parasiteswithoutborders.com

Parasitic Diseases Lectures #21: Nematodes 🪱 Dickson and Daniel introduce the biology of nematodes, non-segmented round worms. 📺 bit.ly/4aG6Jsb

Except for the schistosomes, the trematodes (flukes) are all hermaphroditic.

Page 6 📕 Parasitic Diseases, Eighth Edition

Download a copy for free! parasiteswithoutborders.com/books

Dr. Griffin and Vincent Racaniello discuss reversal of last week’s no review decision on a flu mRNA vaccine by Vinjay Prasad, appointment of Jay Bhattacharya as CDC director, and already detectable reduction in hepatitis B virus vaccination rates. 📺 bit.ly/4asz5aG

Antonie van Leeuwenhoek, the famous Dutch microscopist, in a letter written to Robert Hooke in 1681, described in detail the living trophozoite stage of Giardia, which he observed in a sample of his stool . . . Pg 11 📕 Parasitic Diseases, 8th Ed. Download for free! parasiteswithoutborders.com/books

Vector-borne organisms rely on the biology of blood-sucking insects, for the most part. Mosquitoes transmit all malarial species, tsetse flies transmit African Sleeping Sickness & sandflies transmit all species of Leishmania.

Pg 2 📕 Parasitic Diseases, 8th Ed. parasiteswithoutborders.com/books

Infectious Disease Puscast #100 🪱 On episode #100 of the Infectious Disease Puscast, Daniel and Sara review the infectious disease literature for the weeks of 1/29/26 - 2/11/26. 📺 bit.ly/4aSYbzz

TWiP 274: Four tablets for bloating 💊 TWiP solves the case of the 40-year-old male who travels to India and develops intestinal bloating and diarrhea. Hosts: Vincent Racaniello, Daniel Griffin, and Christina Naula. 📺 bit.ly/4kHD06Y

Parasitic Diseases Lectures #20: Helminths 🪱 Dickson and Daniel introduce the helminths, including nematodes (non-segmented round worms), cestodes (segmented flat worms), and trematodes (non-segmented flat worms). 📺 bit.ly/46f68fZ

Water-dwelling animals such as beavers can be infected and contaminate public drinking water. This is why infection with G. lamblia is known in many parts of the United States as “beaver fever.”

Page 11 📕 Parasitic Diseases, Eighth Ed. Download a copy for free! parasiteswithoutborders.com/books

Dr. Griffin and Vincent Racaniello are shocked by recent events, including Dr. Oz’s appeal for measles vaccination, Vinjay Prasad’s unilateral rejection of Moderna’s mRNA influenza vaccine application, and the increasing number of New World screwworm cases. 📺 bit.ly/3OoerQf

Are you keeping up with Infectious Disease Puscast?

Join Dr. Daniel Griffin and Dr. Sara Dong as they take time to review infectious disease literature on their podcast, Infectious Disease Puscast — new episodes every other Thursday.

🌐 parasiteswithoutborders.com/infectious-disease-puscast

In 1921, Edmond and Etienne Sergent demonstrated that sandflies were the vectors responsible for transmitting Leishmania to humans. One species bears their name, P. sergenti.

Page 32 📕 Parasitic Diseases, Eighth Edition

Download a copy for free! parasiteswithoutborders.com/books

Helminths belong to four phyla: Nematoda (roundworms), Platyhelminthes (flatworms), Acanthocephala (spiny-headed worms), and Nematophora (hairworms). Only worms belonging to the first three phyla are parasitic in humans.

Pg 5 📕 Parasitic Diseases, 8th Ed. Download: parasiteswithoutborders.com/books

We recently kicked off our fundraiser for Floating Doctors!

Through the end of April, donations made to Parasites Without Borders will be matched by the organization and donated to Floating Doctors, for a total gift of up to $10,000. Learn more at parasiteswithoutborders.com

Nematodes 101 🪱 Infections caused by nematodes are among the most prevalent, affecting nearly all humans at one time in our lives.

From PWB’s Tropical Medicine Curriculum: parasiteswithoutborders.com/courses

TWiV 1294: Clinical update with Dr. Daniel Griffin 🩺 Dr. Griffin and Vincent Racaniello are back to discuss the measles outbreak in South Carolina, American Academy of Pediatrics vaccine recommendations, and shingles vaccine and the reduction of dementia. 📺 bit.ly/4clxN2i

TWiP 273: Intestinal parasites in dogs 🐾 TWiP reviews intestinal parasites in dogs and their association with clinical manifestations of canine visceral leishmaniasis. Hosts: Vincent Racaniello, Daniel Griffin, and Christina Naula. 📺 bit.ly/4az1MT7

Parasitic Diseases Lectures #19: Non-Pathogenic Protozoans 〰️ Dickson and Daniel discuss non-pathogenic protozoans, including Retortamonas hominis, Chilomastix mesnilli, Endolimax nana, Iodamoeba butchii, and Entamoeba coli. 📺 bit.ly/49Kvi6M

Are you keeping up with our Weekly Clinical Updates?

As infectious diseases travel the globe and garner media attention, Parasites Without Borders staff are curating resources in a timely, ongoing basis.

🌐 parasiteswithoutborders.com/clinical-updates

Infectious Disease Puscast #99 🪱 On episode #99 of the Infectious Disease Puscast, Daniel and Sara review the infectious disease literature for the weeks of 1/15/26 - 1/28/26. 📺 bit.ly/3NTr9q4