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TomCADem

(17,387 posts)
Fri Apr 3, 2020, 12:49 AM Apr 2020

Zoonotic diseases: Why are infections from animals so dangerous to humans?

Trivia question: Where did the Spanish Flu Epidemic of the early 1900s originate?

If you answered Spain, you would be wrong. It actually originated as a zoonotic disease in rural Kansas that came from pigs and was passed to people. It was a zoonotic disease.

https://www.kcur.org/post/what-1918-flu-pandemic-taught-kansas-city-about-dealing-outbreaks-coronavirus#stream/0

Some researchers say the 1918 flu outbreak, the deadliest pandemic in history, may have started in Kansas. A Haskell County doctor is believed to have first documented the deadly flu strain and it was believed that soldiers from Haskell County transported the disease to Fort Riley. Camp Funston at Fort Riley was particularly hard hit. And then U.S. troops sent from Fort Riley to fight in World War I in Europe may have carried the virus with them and it spread from there.

Eventually, the 1918 pandemic is said to have claimed between 50 million and 100 million lives worldwide, with as much as one-third of the world’s population infected.


At one time, the US and China did communicate decently when it came the spread of zoonotic diseases such as SARS or the bird flu. Of course, Trump fired Dr. Linda Quick an immunologist who served as a liason between China and the CDC. Of course, this lack of communication may have delayed the U.S response, though Trump would still have been reluctant to raise the alarm about a possible pandemic for fear of spooking the stock market.

https://www.medicalnewstoday.com/articles/zoonotic-diseases-why-are-infections-from-animals-so-dangerous-to-humans

While it is not yet clear which animals were the source of the new coronavirus — was it bats? Was it pangolins? Was it both? — scientists are sure that SARS-CoV-2, the virus that causes COVID-19, originated from animals.

The numbers of confirmed COVID-19 cases across the world are staggering. According to Johns Hopkins University, hundreds of thousands of people have contracted the virus and tens of thousands of people have died.

But zoonotic diseases — that is, diseases acquired from animals — were affecting vast numbers of people across the world before COVID-19 took center stage.

An international report from 2012, for example, informed that a total of 56 such diseases were responsible for 2.5 billion cases of illness and 2.7 million deaths across the globe each year. These illnesses included rabies, toxoplasmosis, Q fever, Dengue fever, avian influenza, Ebola, and anthrax.
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flying_wahini

(6,588 posts)
1. I'm watching Pandemic as we speak on Netflix. Wow!
Fri Apr 3, 2020, 12:53 AM
Apr 2020

The zoonotic diseases escalation with this covid-19 and Mers, SARS and Ebola
is terrifying!

It specifically talks about Trump cutting the funds to the study and prevention is even more heinous.

Be sure and watch it.


Laffy Kat

(16,376 posts)
2. So our immune system has no memory, no antibodies against cross-species viruses.
Fri Apr 3, 2020, 02:07 AM
Apr 2020

It is truly terrifying and it is going to keep happening now due to global warming. If we dodge this one what about the next one? Nightmare stuff.

Aussie105

(5,374 posts)
3. Cross species movement of viruses has been with us forever.
Fri Apr 3, 2020, 03:07 AM
Apr 2020

It's just that the size of human populations, their concentration in large cities, and their ability to move anywhere on the globe in a short time span makes each appearance of such a virus a global affair.

If a small isolated group of humans - or animals of any species - is subjected to a local viral disease that transferred spontaneously from another animal species, that population could be wiped out without any other isolated population being affected by it, because the virus would die out too.

We have success stories in preventing recurrences and deaths from viruses, like polio, measles and smallpox, but there are many that are with us killing millions each year.

Seems human memory is short, once a balance is struck between low annual deaths and people who have developed immunity, the hunt for effective vaccines tapers off as not urgent.

Maybe it is time to streamline the detection of new viruses and speedy development of vaccines against them? Detect it early, develop a vaccine early, and immunize people before the bell curve starts to climb.

Rather than 'Gosh, didn't know this sort of thing could happen!' it should be 'We are ready for the next one!'





 

Baclava

(12,047 posts)
5. Quite right, human populations have exploded in the last few thousand years, travel in the last 100
Fri Apr 3, 2020, 10:28 AM
Apr 2020

Whoever got sick from exposure to bat viruses in the past would get sick and only infect a tiny population. Now with our overcrowded world any disease can find a home in us and explode exponentially if we have no immunity.

ck4829

(35,042 posts)
6. Indeed, all animals would be our enemies if this was true about zoonotic diseases
Fri Apr 3, 2020, 10:30 AM
Apr 2020

Domestication would not be possible.

flying_wahini

(6,588 posts)
7. That's why a Pandemic study teams are needed in all countries and at all times.
Fri Apr 3, 2020, 02:25 PM
Apr 2020

Why it was so gutting when Trump killed the Pandemic response team in 2016.
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