In 2001, dengue fever struck Hawaii. To quote:
The 1944 epidemic started in 1943, the first such cases since 1912. Most of those afflicted came from the war in the Pacific, and totaled 1498 patients in Hawaii.
none exists today, A vaccine for malaria, however, appears closer to reality.
Dengue is transmitted by several species of mosquito within the genus Aedes, principally A. aegypti. The virus has five different types;infection with one type usually gives lifelong immunity to that type, but only short-term immunity to the others. Subsequent infection with a different type increases the risk of severe complications. As there is no commercially available vaccine, prevention is sought by reducing the habitat and the number of mosquitoes and limiting exposure to bites.
Or more specifically when the number was 88:
The world-wide dengue epidemic:
In the USA:
So should you go to the Big Island? Well, 100+ cases thus far compared to 50 million to 100 million worldwide. I'm glad I don't live in those infected areas, but how will tourism be affected? If you're a potential visitor with zero tolerance for dengue, there are other islands in Hawaii.
In any case, as terrible as the above symptoms are, in my past travels I encountered worse: chikungunya (also a virus) in Reunion Island and malaria (not a virus but a protozoan) in Papua New Guinea.
Reunion (the smallest island right of Madagascar on the bottom) in 2005, short excerpt: There are two other problems: mosquitoes and cockroaches. In Norway, if you see a leaf rolling on the ground, it is a leaf. In Reunion, it will probably be a roach, especially at night. Actually, I exaggerate, for there are probably more large cockroaches on my roof area on warm nights than in any equivalent space on that island. I did, though, have an encounter here with the largest flying cockroach I have ever seen. The mosquitoes, though, were the truly worrisome factor. Just this year, Chikungunya appeared. 5,000 now have been infected, and the symptoms are like Dengue Fever, but with a lot more pain.
What really caught my attention, though, was when I mentioned that I had not bothered with malaria precautions and asked, “just how serious was it?” One of them dropped his drink and the others, wide-eyed, expressed alarm. First, Lae is a lot wetter than Port Moresby, and the problem is amplified here. Second, it was too late. Third, those trying to prevent malaria as a resident by taking medication can go blind. However, S.L. (don’t remember her first name) gave me a bunch of pills and said, all things concerned, it might help. I asked one of them about the getting blind part and asked for some details. He (a colleague from the University of Michigan who was a visiting professor at the University of Lae) said he decided not to take that chance, the blind chance. So, he had malaria.