9 Months later: "Corona has entered the Chat"

When you mentioned the Neolithic decline I immediately thought about grain storage and rodents. And...the plague. Its no wonder the Egyptians worshiped cats

"Pathogens from the past" ... Pastogens

You should really specify that smallpox is extinct *in the wild* but still exists in labs and can be weaponized. The U.S. military still vaccinates soldiers going overseas against smallpox.

*shakes fist and yells at the sky* Y. PESTIS!!!!

When KZfaq suggests a video that looks good, but, when you click on it you see that you already "liked" it sometime in the past you gotta ask yourself... Should I watch it again?

Smallpox is eradicated, not extinct. It still exists in at least two labs in the world, and the WHO may or may not ever change their mind about keeping it.

8:28 "smallpox is now extinct!" Anti Vaxers "Hold my Essential Oils."

"By the next year, it's estimated that there were between 5,000 and 10,000 deaths PER DAY in the capital." That is mind boggling. What did they do with all of the bodies? Dealing with hundreds of thousands more bodies per month must have caused at least a few issues.

I bet there were people saying "it's just a flu bro" during these too.

I've read about the Cocoliztli outbreaks. That is one disease that sounds legit terrifying, like something from an apocalypse horror movie.

The epidemic involving the Wampanoags in Massachusetts happens shortly after English explorer Bartholomew Gosnold came to the area in 1602. He explored Cape Cod and the Elizabeth Islands and even settled on Cuttyhunk for a time. I find it highly probable that the epidemic that hit the Wampanoags was of European origin - and likely that it involved contact with the English settlers/explorers who visited the region prior to the Pilgrims (who landed in 1620).

Wow, this episode was thoroughly packed with information from beginning to end. Great job SciShow!

No Brilliant or Skillshare ad at the end? I'm surprised. Thank you. And thank you, to everyone that supports SciShow, financially and through your labor.

12:21 Person:What do you do for work? PhD:I'm an epidemiologist, I study disease. Person:Cool, what's that like? PhD:I'm looking for mass graves! Person: ... *backs away, slowly*

"This is the oldest known strain of The Plague" Someone forgot the episode they did on weird things found in Amber... including a plague flea from millions of years ago...

watching this again, but this time a year and a half into Covid 19, is a whole different experience than watching it in 2019

And soon enough, everyone will come here because of the coronavirus, all thanks to KZfaq Recommendations

The announcer for this video is really good. He speaks quickly and covers the topic at a good pace. The subject was interesting, but not fascinating. His pace, however, compelled me to pay close attention. The camera work was also good by shifting from different views of the speaker. TY for making this video.

It would make sense to the Neolithic decline was caused by yersinia pestis. An increase in farming equals an increase in Grain eaters like rodents. Awesome video!

I remember in kindergarten there was an outbreak of cooties 🔥🔥🔥🔥

Given the horrific plagues of the past, it's amazing that with reference to vaccination, it does NOT suffice to merely describe a person as either "pre-" or "post-" ...we actually have to include "anti-" as well!

The history of epidemics and how they spread is fascinating. By the way, how many people are watching this during a Covid lockdown?

....I saw this when it came out ...I liked a bunch of comments laughing about how we're going to be getting another epidemic soon ...Well. Things sure have changed a bit now haven't they?

There used to be outbreaks of "Dancing Mania's" in the middle ages, where people would dance until they collapsed or sometimes even died. Speculation regarding the causes is varied and ranges from cultural movements to epilepsy.

Pandemic, Black Death, Anthrax, Rinderpest, Bubonic... such amazing band names can be found in ancient outbreaks. "I saw Rinderpest in Berlin recently, so it was so bad ass!!!"

3:28 No one expects the Spanish physician.

That first one you said bacteria couldn't survive the winter but weren't they in the rats and a smart rat is a warm/full rat.

The Plague : Hello humans, old friends, who can I kill now? Humans : *Who are you*

Plague: *Kicks down door out of China with a new strain* "Hey, people! It's your old friend Y.P. Did you miss me?" Humanity: "Not again!"

Don't worry guys, its just the Devs using some nerfs on Humans so they don't get too OP

High rainfall floods rat holes and sewers. Rats then get driven out of their homes into human settlements infecting us.

It's ancient history now, but I remember in middle school there being an outbreak of pimples. It was a break-out outbreak.

Am I going mad or does the theme song get *ever* so slightly slower every week? Like by 2025 it’ll take 2 full minutes

Neolithic mega-cities were enabled by large-scale grain cultivation and storage causing an unprecedented boom in rodent populations. Hence the likely domestication of cats and the first meeting of humans with bubonic plague. Is that hypothesis reasonable?

Leading cause of epidemics in humans; Too many people living very close to each other (local overpopulation). Cholera, Typhus, influenza, polio, Measles, plague, ... etc, spread very quickly in dense populations. Bigger cities are not always better!

Thank you for describing Justinian I as a Roman emperor and not a Byzantine one. Not relevant to the topic but I appreciate it. Good video.

Could you do more Epidemiology videos? It's my passion and area of study. It also deserves more of the spotlight.

I eat a burrito from a convenience store and got all of these symptoms. I'm pretty sure they had burritos back then but I don't think they had convenience stores.

Rewatching this with much different context

"This could help us predict the next outbreak" Less than a year later...

Disappointed this didn't include the medieval European dancing mania.

Here starts the new fashion trend, flea collars...and bracelets...and anklettes.

Somebody get that man a pocket protector.

Dying of an infection was very common in the recent past. We forget how scary was life then. And it explains how population was so scarce even with women having more than 10 children each.

Him: studying plagues from the past might help us figure out thee next big outbreak Me:so...what are you going to do about this,

I wonder if in some of these there is a case to investigate multiple simultaneous infections - ala coinfections?

Damn, those are some really.... *retro* viruses

Corona will one day be apart of these types of videos

If you ever do a Part Two for this, my vote is for the Sweating Sickness!

Thanks for recommending this KZfaq. You really know how to make feel better.

As a historian, never count out Yersinia pestis is my new catch phrase.

I'm a little confused as the classification of Leptospirosis as a tropical disease. I'm a veterinarian in Canada and I vaccinate most dogs that I see for lepto. I also have a couple confirmed cases each year that we attempt to treat. I have colleagues further north that see many cases a year. There are different strains of the bacteria, but we have at least 4-6 strains that most definitely manage the cold. Dogs tend to be more at risk than people but it is zoonotic. I believe it's survival over winter is likely in dear and raccoons, the carrier species, as it is not very environmentally stable. Anyway seems strange to refer to it as tropical as I've always been taught it as pretty much endemic, at least from a veterinary perspective.

Outbreak of memes earlier this decade has to be the most catastrophic of all time.

"could give us the insight to predict the next big outbreak" nope!

Justinia Plague is now my drag name

I never get tired of the theme music for SciShow!

"the great dying" *hmm, my ancient nerd senses are tingling*

Imagine the world population if there was never any plagues

This is interesting to watch during the 2020 Sars-CoV-2 pandemic

God was just playing Plague Inc.

I don't like the unsolved ones like sleeping sickness. If we don't understand what caused the last outbreak then we know for sure another outbreak of the same will cycle back around and we'll be no better prepared than we were the first time. The next pandemic will be 10x worse than covid cause all those who will now refuse to believe the epidemiologist and will refuse to take precautions. It's gonna be nasty.

For #6, since this was one of the first major settlements and most likely nobody thought of sewage I figured the cause would have been cholera.

This is the first time I've ever felt hopeful that we would stand a chance against the next pandemic. If we can learn the lessons of the past. . .

Ok why is this recomended when covid 19 is a pandemic

Thank you for continuing to deliver awesome content!

All of you reading this, you are special!!! You are the product of millions of years of evolution and every one of your ancestors survived these and other plagues, diseases, accidents, murders, sudden deaths etc at least until they had children. We are ALL THAT LUCKY!!! So enjoy your Life, it is a true gift!!! And be nice to each other and to other Living beings, we are all special, plants and animals alike.

The 2019 Corona virus pandemic brought me here. Who's with me? 🙋

Humans: *exists* Mother Nature: hold up, that can't be legal

*OOOH, FLEAS ON RATS, FLEAS ON RATS!*

I think Leishmaniasis fits the first one better that leptospirosis. It's a parasite that has bugs as a vector like ticks, fleas, etcétera; but it covers everything. Skin lesions rather than spots, yellowing caused by jaundice when it attacks the liver, mucocutanious leishmaniasis causes nose bleeds. It can survive in cold climates when in a person, and can be transmitted through bodily fluids or faces if eggs are present. Since they'd be using the river to dispose of waste, the entire river would be contaminated with eggs. Water getting in the eyes, nose, cuts, scrapes, or even contaminated food fits the criteria to a T

I have been loving the curiositysteam documentary ads. Watched “first man” about our ancestors and it completely stole my attention.

Historically famous/deadly virus: Hey Me (while on quarantine for like 40 days?): Sorry I’ve got enough with corona

This episode aged like a good cheese.

I have a bit of an obsession with epidemiology videos. My mom was a USDA epidemiologist for over 30 years, and I'm a vet tech. These kinds of videos really tickle my nerdy fancy.

It’s fascinating that there are so many methods for studying ancient outbreaks.

It's often said that a skillful or talented enemy deserves full honor and respect. And I gotta say that Yersinia Pestis definitely has my respect. It seems to be Natures main power card, which it uses whenever humanity gets a bit too cocky. With the ongoing events unfolding, the last thing I want to see, is a new outbreak of Yersinia Pestis, formed from a new string, which also happens to be resistant to all current medicine that can kill it. Also, what about the Dancing Plague?

Watching this now, I think we have a new epidemic on our hands...

Very well done, but I am surprised that the sweating sickness wasn't mentioned.

I really liked the way this video was put together and how the stories were told. 10/10

Scientific community: Smallpox is gone Russia and US: Yeah... about that

Finally something about my favourite Chaos god!

I wish the world could know who Patient Zero is, concerning the Covid-19 pandemic!

I found this video today on April 14, and then I looked at the release date of the video

And the Plague may be showing up again in California. Fun.

SCISHOW HELPS ME IN REGISTERED NURSE SCHOOL!

funish librarian/small pox story, When I started as I librarian I was told this story about how a librarian was sorting shelves in a local history part of the library when a envelope fell out of a book. On it read apparently small pox sample or something of the sort. This person apparently did the smart thing and called a local hospital. After some research it was discovered that it really was a smallpox sample left by a local doctor. It was properly distroyed and we avoided another small pox outbreak. PS. This is just a story I was told 'apparently' it made the news but I don't know. Either way I think it's a fun story about not opening mysterious packages. Just take with a grain of salt.

Wow I'm watching this 4 years later to the day. Nice

Regarding Cocoliztli, I think it should have been noted that the language it comes from, Nahuatl, is the Aztec language, and also gave us words such as Tomato ("Tomatl", though ironically this was speffically tomatillos, they called Tomato's Xitomatl), Coyote ("Coyotl"), Ocelot ("Ocelotl", which wwas the word for Jaguar), and most words in Mexican Cuisuine like Tortilla, Tamale, Mole, Advocaco, Guacmole, Chili, etc. I think it also goes to show you how much the Spanish Conquest easily could have turned out differently: In history class, most lessons on it stop with the fall of the Aztec captial in 1521, but in reality there were hundreds of city-states and empires in the region that didn't cede to Spanish authority. Most of the region was not pacified until the late 1500's, nearly 60-80 years, with some parts never actually really being under Spanish control: The fact that it took that long despite the absolutely massive population losses due to the Smallpox and Cocoliztli outbreaks, and despite the fact that Spainish Conquistadors were being added by much larger armies from native states they allied with, goes to show that contrary to population perception, the conflict was very hard fought, and had the outbreaks not been as severe or Spain hadn't been able to ally with native city-states, they may have never conquered it.

I got a news update reporting the highest measles outbreak in 25 years while watching this vid.....

Yeah, watching this in 2021 really hits different.

Stephan and SciShow. Educating the world, and making it just a little less stupid. Brilliant.

5:17... but my groin swells up when I wake up?

I thought the great dying referred to the Permian extinction

I used to work with a guy who went to a boarding school in the U.K. In the middle of December, they closed the school, and sent all the students home. The school opened a year later, and found out all the students were going into laughing jags, and couldn't stop. Everytime a student interacted with another person, they would laugh when they tried to speak. At first they thought it was stress, and hysteria, but the laughing spread to another school when a student switched to another school across the country.They kept the whole thing hush, hush, because they afraid it might scary the public. The guy I knew said they laughing happened to him, but he didn't know that's why they closed the school He said the laughing was real. Everything just seemed so funny. When he was older, the laughing seemed very scary. He said that his father was trying to talk to him, and kept laughing. His father took offense, and demanded he stop laughing. This made him laugh, and father slapped him, which made him laugh. His father lost his temper, and started beating him, and laughed so hard, he couldn't stand up. At this point his mother came in to the room, and She was frightened, and this made him laugh, and laugh. First his father backed away from him until he hit the wall, where his mother was backed to the wall. They both ran out of the room. He said that he almost passed out laughing when he seen how scaried his parents were. They made him stay in his room, and his mother put food on a tray, and left it for to pick up after she left. Both his parents were afraid it might spread. It was all a big secret, and forgotten now.

There are 3 days until its been a year since this was posted and now ITS CORONA TIME

God bless KZfaq algorithm

Awesome video had me contemplating what our ancestors went through

Great episode to this day, I still wonder what the old world would have been like. Probs filled with murder hobo rage tbh (how is that different from now....)

Funny, the video is from before the pandemic but the description from afterwards ^^