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Old Yesterday, 11:41 PM
 
51 posts, read 24,999 times
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Would a cold season supress insects, mosquitoes, microbe etc activity more than a hot dry season? I see that it probably does as places with Cfa/b climates have far less tropical diseases than places with Aw climates. I cant seem to figure out why.

But why is there such a disparity?
Hot and dry = no water.
No water = no mosquitoes/insects,pests,microbes etc

Both share a hot and very humid summer. Why doesnt a dry season have as large of effect on diseases in Aw climates than a cold season does in Cfa climates.
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Old Today, 01:27 AM
 
Location: Putnam County, TN
127 posts, read 25,914 times
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They can travel. Also, there may still be permanent bodies of water, even when intermittent ones dry up.

Cfb climates are actually temperate oceanic, not humid subtropical. However, places along the Tennessee/North Carolina border as well as on certain Chinese mountains do have a sort of "wet subtropical highland" climate like that.

As for humid subtropical climates "not having tropical diseases", they are actually still there... We do have kissing bugs, mosquitoes and a few other things. The above freezing AVERAGES (not lows nor minima) may permit them to survive better (it does that with broadleaf evergreens like palms, magnolias, hollies, yews, etc. too), or they could retreat into caves during cold snaps. Malaria may be rare here, but mosquitoes here have still been known on occasion to give people Zika and West Nile, and kissing bugs can transit an gross NTD too.

Also, Gulf Coast Ticks affect much of the southeast (except TN for some reason - odd considering OK, AR, MD and VA have them) and transmit Rickettsia parkeri rickettsiosis, a form of spotted fever caused by an intracellular gram-negative bacterium.
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