Heather McSharry, PhD

If you’ve ever looked at the childhood vaccine schedule and thought “that feels like…a lot” You’re not alone. I've added a new lens to tackling this issue in my updated episode: “Too Many Vaccines Too Soon?” 🧵

@ericflynnster Ah, I hadn’t thought of that angle but it’s a great point. Thanks for responding!

@PathogenScribe I chose evidence, but wish there was an option for wild type health risk vs vaccine risk. I’ll take an even moderately effective / slightly risky vaccine for a potentially lethal pathogen.

It's time for a #PathogenPoll 🦠 When you’re trying to decide if vaccine information is trustworthy, what matters most to you? Vote below and if you have a different metric let me know in a comment!!

I have a friend in Cuba and what they just reported should end careers in Washington. Every single patient on a ventilator in their hospital died tonight. The power went out. The ventilators stopped. This isn't a rare incident anymore. Cuba's grid has collapsed 3 times THIS MONTH. The hospital staff told them they've had more emergency deaths in the last 30 days than in all of last year combined. A patient with leukemia at a Havana hospital told reporters: "Without fuel or affordable transportation, life has only gotten harder. We are fighting every day." NICU babies are on bare minimum power right now. Dialysis patients are playing Russian roulette with every blackout. Cuba has received ZERO oil in 3 months. That's not a shortage. That's a blockade. The US blocked a Russian rescue mission — 730,000 barrels of oil heading to Cuba — turned it away. Then the official story went: "We're sending $6 million in humanitarian aid." $6 million in aid. 930,000 barrels of oil blocked. You can't fix ventilators with $6 million when the grid is dark. And Trump's own words from March 6, 2026: "Cuba will fall. After 50 years, this is the cherry on top of the cake." The people dying in hospitals tonight are his cherry on top. I'll keep you updated. Turn on notifications. 🚨

@davidkurten The case count went from 34 to 29. And two kids are still dead. This is still one of the largest meningococcal outbreaks that we have ever seen outside an area where meningococcal disease is endemic. Shame on you for trying to minimize it.

New #OutbreakAfterDark Drops Tues midnight CST: Boots on stone. A red cross on your door. And a figure in black arrives. 🕯️ Plague Doctors The Bell. The Beak. The Mark. Science, Myth, and the System Behind the Mask. #InfectiousDose

“When a reasonable question isn’t clearly answered, it can start to feel like a confirmed danger.” That's why I made this episode. 🎧 or read: infectiousdose.com/post/episode-7…

This belief goes from intuitive ? to vaccine fear when the system fails to effectively present the information: You see the number of shots You don’t see the antigen load You get 15 minutes with your pediatrician That gap gets filled by misinformation.

If you’ve ever looked at the childhood vaccine schedule and thought “that feels like…a lot” You’re not alone. I've added a new lens to tackling this issue in my updated episode: “Too Many Vaccines Too Soon?” 🧵

Meningitis is not a debate. It is a timetable. You can be well at breakfast, critically ill by lunch, and dead by morning. The organism—Neisseria meningitidis—requires no permission, no podcast, and certainly no belief. It moves from throat to bloodstream to brain with a speed that makes “doing your own research” a rather final hobby. And yet, as young people are hospitalized and buried, we are told this is “nonsense.” One must admire the theater: dismissing a disease that can kill in hours while benefiting from the very vaccines that made it rare enough to forget. My son is 15 - you can get he is vaccinated, I'd love to meet my grandchildren (not too soon mind you)

@NicMunoz10 Thanks Nickster! I hope you enjoy it!

@PathogenScribe Great comment, lead me to see that you have a podcast. Looking forward to listening to it!

Not sure how something spreads? Wear a respirator. If it helps, great. If it doesn’t, you still avoided other pathogens along the way. There’s no downside to protecting yourself. People who are bothered by other people choosing to wear one are not worth giving any thought to.

@Fortune4Beth @KellyAnneBryan1 Great argument Beth! Love to hear it!

@PathogenScribe @KellyAnneBryan1 I don’t care what other people think about me wearing a mask. Last time I was sick was December, 2019. Nearly 6 and 1/2 years without even a single cold. Never getting sick is an awesome way to live.

This is … just ok so yeah this is a thing because there’s a big enough market for it. And these savvy folks stepped right in to protect the enabling systems. I think maybe we just need one purge.

The interesting thing with them is how even they're repulsed by the optics of so much they cheer for. The insurrection disturbed a lot of them not because of the act itself but because of how horrifying it looked. Hey, too bad. This is what they wanted.

These experts w/ real-world experience don't "think" anything about the sun...they KNOW exactly what sun damage looks like in their patients. They aren't lecturing people or selling anything here they are protecting themselves. How absolutely asinine to make this your takeaway.

17 year old in Spain 🇪🇸 is in intensive care with tetanus. TETANUS Because his parents didn't get him vaccinated Tetanus is deadly and horrific NO ONE should EVER get tetanus GET VACCINATED!!

Problems with pharma don't mean that quackery works. Problems in aircraft design don’t mean that magic carpets can actually fly. - Ben Goldacre