When my 9 mos daughter suffered dengue hemorrhagic fever back in 2008 in Indonesia, it was in the month of June. My wife reflected on the timing of the disease to spread, which to her is rather uncommon. Based on her medical training, dengue hemorrhagic fever disease normally occurs in the months of January and February in Indonesia.
Recently, I read two articles in the Jakarta Post and Kompas reporting the spread of malaria in Banten, Western Indonesia. Banten, however, is not a location where malaria disease typically occurs. Central and Eastern Indonesia have long been considered as the endemic locations for malaria due to relatively warmer temperatures.