You can drop the '3rd and 2nd worlds' part. It's used for the treatment of parasites in the 1st world as well. I'm not a infectious diseases expert, but to my

You can drop the '3rd and 2nd worlds' part. It's used for the treatment of parasites in the 1st world as well. I'm not a infectious diseases expert, but to my knowledge the viruses that it's been found to be effective against are all mosquito borne; it's just as likely related to it's toxic action on mosquitos in general. Still, it's all baseless conjecture on everyone's part. If someone cares to throw money at it, it's something that can be investigated. At the end of the day just get the widely available vaccine and move on with life, like you would for other viruses that we've got vaccines for. I feel like we're all making this way harder than it has to be just so we can all continue to yell at each other.