Anthrax among Canadian Bison
Our recently-joined member, Dallas New, is a Canadian veterinary epidemiologist and last evening she enthralled us with her study of anthrax among bison.
Firstly, she told us something of the history of epidemiology, which began when Dr John Snow found the cause of a cholera outbreak in London.
Then she explained how bison had recovered from near-extinction in North America, and why anthrax is threatening them. All mammals are vulnerable to anthrax, but cattle and bison are particularly intolerant to it.
Anthrax spores move around, but lodge and persist in the soil. For this reason, dead bison have to be cremated rather carefully so as not to release more spores into the ground. This is quite a challenge as bison are huge and fuel has to be brought to the site by helicopter.
Dallas collected data in the Northwest Territories to find out why outbreaks of anthrax poisoning occur in bison populations.
There were three hypothetical causes: spores could be incubating, especially in hot weather and then bursting out; anthrax could be concentrating in bison ‘wallows’; or bison may always carry anthrax but sometimes have low resistance to it.
Many research projects have inconclusive results and this was one of them. It seems likely that outbreaks occur because of all three factors.
Anyway, Dallas clearly enjoyed her spell in the Canadian wilderness and earned a Master’s degree.
Poll: Are Kiwis allergic to “exuberance”? 🥝
In The Post’s opinion piece on the developments set to open across Aotearoa in 2026, John Coop suggests that, as a nation, we’re “allergic to exuberance.”
We want to know: Are we really allergic to showing our excitement?
Is it time to lean into a more optimistic view of the place we call home? As big projects take shape and new opportunities emerge, perhaps it’s worth asking whether a little more confidence (and enthusiasm!) could do us some good.
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41.8% Yes
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33.4% Maybe?
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24.8% No
Some Choice News!
Many New Zealand gardens aren’t seeing as many monarch butterflies fluttering around their swan plants and flower beds these days — the hungry Asian paper wasp has been taking its toll.
Thanks to people like Alan Baldick, who’s made it his mission to protect the monarch, his neighbours still get to enjoy these beautiful butterflies in their own backyards.
Thinking about planting something to invite more butterflies, bees, and birds into your garden?
Thanks for your mahi, Alan! We hope this brings a smile!
Neighbourhood Challenge: Who Can Crack This One? ⛓️💥❔
What has a head but no brain?
Do you think you know the answer? Simply 'Like' this post if you know the answer and the big reveal will be posted in the comments at 2pm on the day!
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