Study shows that over half of known human path... - CLL Support

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Study shows that over half of known human pathogenic diseases can be aggravated by climate change

bennevisplace profile image
15 Replies

Recently published in Nature nature.com/articles/s41558-...

"Here we carried out a systematic search for empirical examples about the impacts of ten climatic hazards sensitive to greenhouse gas (GHG) emissions on each known human pathogenic disease. We found that 58% (that is, 218 out of 375) of infectious diseases confronted by humanity worldwide have been at some point aggravated by climatic hazards; 16% were at times diminished. Empirical cases revealed 1,006 unique pathways in which climatic hazards, via different transmission types, led to pathogenic diseases. The human pathogenic diseases and transmission pathways aggravated by climatic hazards are too numerous for comprehensive societal adaptations, highlighting the urgent need to work at the source of the problem: reducing GHG emissions".

As CLL/ SLL patients, potentially at higher risk of contracting infections various, one adaptation open to us (aside from living life in an isolation tank) is to ensure that we each keep up to date with our immunisation schedule. Here's advice from the CLL Society, with programmes specific to the USA, the UK and Australia respectively cllsociety.org/2022/03/vacc...

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bennevisplace profile image
bennevisplace
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janvog profile image
janvog

There is yet an even more troublesome problem: A warming climate expands the range of insects that transmit dengue fever, malaria and other dangers.

bennevisplace profile image
bennevisplace in reply tojanvog

Troublesome for sure. That's the kind of impact I think this study builds in, by its nature, if I understand the approach. You can get a higher level of detail by going to the site referenced in the paper, i.e. camilo-mora.github.io/Disea...? This graphic is worth playing with. Click on a pathogen e.g. Dengue fever and see where that leads...

I recall reading in a book about insects, published more than 45 years ago, the surprising fact that malaria had been found within the Arctic Circle, and on Hayling Island in the south of England. At the time I was living on the island of Borneo, working in coastal rain forest and taking a weekly prophylactic against malaria.

Maybe as wealthy populations begin to be afflicted by these "tropical" diseases, the means to control them will be stepped up.

janvog profile image
janvog in reply tobennevisplace

I got dengue in the Dominican Republic in 1988 where Dengue had not existed previously. Away from the capital in the bush at a stunningly spectacular beach, I laid helpless and weak for two weeks in my hammock. Here in Southern Florida, the City sends a vehicle around the neighborhood at midnight that sprays an insecticide mist which seems to be very effetive and seems not to affect the fauna of birds, reptiles or squirrels. Nor the obligatory dog without noboby seems to be replete outside. (What is wrong with this person walking around without a dog ? Or without a baby carriage containing a dog ..... ?)

bennevisplace profile image
bennevisplace in reply tojanvog

Good story Janvog. I hear somewhere in FL were protests against an insecticide used to control mosquitoes, can't remember where or what.

janvog profile image
janvog in reply tobennevisplace

Here on the "lower West Coast" of Florida, are the homes of many "comfortably" retired in "gated communities" (I am not one of them, but luckly I am here now ....) - and they make the "donations" to politicians who assure comfort....

bennevisplace profile image
bennevisplace in reply tojanvog

According to Google I must have been thinking of an insecticide called Naled and the protests were at Miami Beach, so not your area. The surprise to me was they were spraying to control the spread of zika virus!

janvog profile image
janvog in reply tobennevisplace

Whatever appears in the Caribbean and Golf of Mexico creeps or flies into Southern Florida. Iguanas have come to stay everywhere and drop from trees when it gets cold. Giant asiatic snakes, released by bored collectors into the Everglades swamps are decimating the wildlife and attract removers for the bounty. And of courses infected visitors introduce ever new fevers and infections. But the local fauna is also in the daily news: Bears breaking into homes or swimming in private swiming pools, a scared wildcat sits on top of a pole along a major highway and its rescue requires miles of conquested traffic at rush hour. And the daily news about the alligator who tried to grab the dog or the elderly lady. There is a clinic that treats daily new animals of many species and nurses them back to release. Some urban areas in Florida are still intersected by tracts of "jungle" and the massive urban landscaping recreates a wilderness for many species. The growing of trees and plants for urban and private landscaping is a billion dollar industry and while much wilderness vanishes a variety of urban forestation increases. The medical profession is a positive element: All medical specialists have their clinics virtually hidden in heavily forested and landscaped suburbs.

bennevisplace profile image
bennevisplace in reply tojanvog

I hadn't given it much thought but your description makes sense where the state allows wildlife habitat < development opportunity. S Florida happens to be rich in both I guess.

My BIL spends most of the year in S Florida. Apartment+golf course >95%, but he must know about the environment issues. He never told me more than having to putt around an alligator.

bennevisplace profile image
bennevisplace in reply tojanvog

Re the climate-change effect you highlighted.

From The Argus, Brighton, England, 18 August 2020:

"SWARMS of mosquitoes could plague the south coast as the hot weather provides the “perfect breeding ground” for the bugs.

Mosquito expert Howard Carter (pictured below) said the hot and humid weather has proved the perfect breeding ground for disease carrying insects.

The whole country has seen a sustained period of humid weather this August, with temperatures not dropping below 20C at night.

This, along with the coronavirus pandemic, has created ideal conditions for mosquitoes to breed, with lockdown causing a number of swimming pools or outdoor areas to go unmaintained for longer periods of time.

Rising temperatures globally mean the insects are already more likely to move towards Europe from more tropical regions elsewhere.

n 2018, there were sightings of the Aedes Aegypti mosquito, which can carry the Zika virus, along Sussex and Kent".

It may help to know that mosquito expert Howard Carter is also proprietor of an insecticide company.

In the past two months of hot dry weather, our gardens front and back have been almost devoid of mosquitoes, despite that last year we established a 60 sq m pond, which bloomed into life this spring. Miraculously for a first season, it produced a lot of dragonflies, whose many larvae or nymphs would have feasted on mosquito larvae, as they did on thousands of tadpoles and much else. While the spectacular flying machines live for just a week or two (the males fiercely patrolling their 20ft square), the voracious nymphs can live underwater for upwards of 5 years, eventually emerging to latch on to the stem of a reed. A fresh dragonfly pops out, leaving the empty shell clinging tightly.

youtube.com/watch?v=edW30js...

PaulaS profile image
PaulaSVolunteer in reply tobennevisplace

I don't like the idea of insecticide mists being sprayed over big areas. It may help control the mosquitos, but I doubt if they are the only insects that get killed by it. Wiping out too many insects could upset the whole ecosystem in that area, as well as cause other problems.

I have a vague memory of something that makes mosquitos infertile, but I might be wrong. Ah, now I've found the link. I wonder if that research will lead to some safe and practical use in the real world?

Paula

bennevisplace profile image
bennevisplace in reply toPaulaS

I expect you're right Paula. Please post the link.

PaulaS profile image
PaulaSVolunteer in reply tobennevisplace

Sorry, I thought I'd included it. My mistake

sciencedaily.com/releases/2...

bennevisplace profile image
bennevisplace in reply toPaulaS

Thanks. I had read somewhere that this was being trialled in Africa to control malaria. It seems another important measure.

PaulaS profile image
PaulaSVolunteer in reply tobennevisplace

Yes, those trials sound very important. They have great potential for "safe" mosquito control (and thus malaria control).

G1llHa1n profile image
G1llHa1n

Thanks for getting us up to date. That said, there are some things we just don't want to know even if we need to know - especially when there is a limited amount any us can do.However, forewarned is forearmed.

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