For me, it is micropygous. I got up in a lecture and asked a question involving the word /mai’kropigəs/, much to the amusement of those present who knew the word was /’maikrəʊ’paigəs/
Dengue has ay, not way, so it’s irrelevant here. May I suggest suede?
Perhaps there are regional variations… but I grew up in one English speaking place with plenty of dengue (Townsville, Australia) and now live in another English* speaking place with plenty of dengue (Singapore), and in both places the word is always pronounced /deŋɡiː/.