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Earth Science

Researchers Warn Some Infectious Fungus Could Spread as Earth's Temperatures Rise (cnn.com) 30

Around the world fungal infections kill an estimated 2.5 million people a year, notes a report from CNN. But new research predicts that certain species of infection-causing Aspergillus fungi could spread into new areas as the earth's temperature rises. ("The study, published this month, is currently being peer reviewed...") Aspergillus fungi grow like small filaments in soils all over the world. Like almost all fungi, they release huge numbers of tiny spores that spread through the air. Humans inhale spores every day but most people won't experience any health issues; their immune system clears them. It's a different story for those with lung conditions including asthma, cystic fibrosis and COPD, as well as people with compromised immune systems, such as cancer and organ transplant patients, and those who have had severe flu or Covid-19. If the body's immune system fails to clear the spores, the fungus "starts to grow and basically kind of eat you from the inside out, saying it really bluntly," said Norman van Rijn, one of the study's authors and a climate change and infectious diseases researcher at the University of Manchester. Aspergillosis has very high mortality rates at around 20% to 40%, he said. It's also very difficult to diagnose, as doctors don't always have it on their radar and patients often present with fevers and coughs, symptoms common to many illnesses. Fungal pathogens are also becoming increasingly resistant to treatment, van Rijn added. There are only four classes of antifungal medicines available...

Aspergillus flavus, a species that tends to prefer hotter, tropical climates, could increase its spread by 16% if humans continue burning large amounts of fossil fuels, the study found... [Mainly in parts of Europe and the northernmost edges of Scandinavia, Russia, China, and Canada, and the western edge of Alaska.] This species can cause severe infections in humans and is resistant to many antifungal medications. It also infects a range of food crops, posing a potential threat to food security. The World Health Organization added Aspergillus flavus to its critical group of fungal pathogens in 2022 because of its public health impact and antifungal resistance risk...

Conversely, temperatures in some regions, including sub-Saharan Africa, could become so hot they are no longer hospitable to Aspergillus fungi. This could bring its own problems, as fungi play an important role in ecosystems, including healthy soils. As well as expanding their growing range, a warming world could also be increasing fungi's temperature tolerance, allowing them to better survive inside human bodies. Extreme weather events such as drought, floods and heatwaves can affect fungi, too, helping to spread spores over long distances.

Thanks to Slashdot reader quonset for sharing the article.

Researchers Warn Some Infectious Fungus Could Spread as Earth's Temperatures Rise

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  • Other infectious fungi are also expected to spread as a result of climate change:
    "Risks from fungal infections such as blastomycosis are likely to increase with climate change-associated shifts in temperature and rainfall, and this may contribute to the geographic expansion of cases, a phenomenon that appears to be already underway."
    https://pmc.ncbi.nlm.nih.gov/articles/PMC11542677/

    • Yes, but to offset that diseases associated with cold weather like bronchitis and pneumonias will presumably decrease. This is what really irritates me with such research, if you only look at the downsides - new diseases that will spread with climate change - then it's easy to paint a grim picture of the future. However, what we need is an accurate and honest picture that looks at all the changes - bad and good - so we can do our best to be prepared for them.
  • Not if I move north!
  • Fighting bad fungus with good fungus, for example what happens to milk when it gets mold in it, milk will either go ransid or if cultured correctly will either turn into cheese or yogurt, penicillin is made from a fungus too (something to think about)
    • Yogurt is produced by bacterial fermentation and not by an yeast. Cheese is made using enzymes, not yeasts or bacteria.

    • See it's this kind of astonishing ignorance that really really impresses me.

      Yes biologists have considered whatever the fuck you're thinking of. Because they have spent their entire lives studying the topic in detail.

      Why the hell do you think a random dipshit on a dying internet forum has the key to solving a crisis that doesn't even need to exist in the first place if we would just do something about climate change?

      The answer is that you know the shit is about to hit the fan and you don't want
    • by hey! ( 33014 )

      You are proposing scientists terraform the Earth -- something we're centuries, if not millennia from knowing how to do.

      Take a single cubic meter of dirt from your back yard. That is practically a world in itself, far beyond the capabilities of current science to understand. That's because there are millions of organisms, and thousands of species interacting there and billions of chemical interactions per second. Of the microbes, only about 1% of the species can be cultured and studied in a lab, the rest

  • I don't care for the typically used disclaimer that unless one has a chronic condition, the immune system will clear X. What if one is emotionally stressed on a given week, causing a weakened immune system... What if one is also fighting a common illness, causing a weakened immune system... What if one was mildly food poisoned (with increased intestinal permeability), causing a weakened immune system... What if one is dealing with extreme weather temperatures, causing a weakened immune system... What i
  • ... for all those mushrooms I keep, um, let's just say "consuming."

  • I hated asparagus as a kid but I love it now, especially stir fried.

    What? Oh wait, nevermind.
  • Mario Lehman charges a 433cc kart to Lehman's Mansion. Ms. Toad flourishes down her Nippon Dynomite.
  • It's too late.

    We now have enough CO2 in the atmosphere that +2C is inevitable. Even if we stopped today. (and stopping will cause it to rise further as the haze stops blocking some incoming heat). It's just going to take time for the incoming energy to be trapped and build up to that new equilibrium point. Probably by 2035.

    And by 2050, we will have enough CO2 in the atmosphere that +3C is inevitable by 2060. Nothing reasonable is going to change that.

    It's possible that declining population and new tech

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