Yes mosquitoes have a lot to answer for - much closer to home we have Ross River fever spreading south all to rapidly.Brutal truth: Malaria effects poor nations, mainly Africa. Doesn't affect developed nations in the same way. It is outside the paradigm of the western world, and indeed most of the rest of the world (i.e. outside of Africa). Not saying that's the right and ethical outlook but that's the way it is.
For example, if you take the G20 as representing the true power in the world (ie. what drives world outlook and policy) ... it was estimated there were 20,000 malaria deaths (in the figures I saw for 2017) amongst G20 nations, almost all in India (17,000) and Indonesia (3,000) vs 160,000 and 40,000 reported COVID deaths in those two nations alone in the last year. [In the rest of the G20, South Africa had ~300 and Brazil ~30].
And in the context of this particular thread, how many Australians or foreigners each year bring Malaria into the country from one of the hotspots, and transmit it to other people within Australia?
And, as I suspect 99% of (non-AFF) Hawaiian bound tourists don't know - Denghi fever is seemingly near ever present on several of the islands since the early 2000s - just not publicised widely.
What diseases do mosquitoes carry in Hawaii?
Sure, mosquitoes in Hawaii are annoying, but they can spread disease such as Dengue Fever and even the relatively new disease, chikungunya. encephalitis, malaria, yellow fever, and West Nile virus.
"Dengue is not endemic to Hawaii but has occasionally spread after being imported by infected travelers. The outbreak on the Big Island is the first cluster of locally-acquired dengue fever since a 2011 outbreak on Oahu, the Hawaii Department of Health said."
There have been outbreaks in 2015 (over 65,000 cases), 2016, 2018 & 2019. The last two (on the Big Island) got virtually zero publicity and in several areas people only found out by County officials turning up at your door to warn you & request that you check your property for any stagnant water locations. The notifications were done +/- 100 yards of a diagnosed case. Which seemed way too short a distance.
How far can mosquitoes fly? Mosquito species preferring to breed around the house, like the Asian Tiger Mosquito, have limited flight ranges of about 300 feet. Most species have flight ranges of 1-3 miles. Certain large pool breeders in the Midwest are often found up to 7 miles from known breeding spots.
One species in Hawaii is around 1/4 the size of a typical mosquito found in Melbourne/Sydney, much smaller than a fruit fly. Also much quieter.