Seasonal disease, is one of the problems with high rates of morbidity and mortality. Disease events due to seasonal changes always occur throughout the year.
Influenza is a common disease, and currently the pre-emptive and curative efforts are still not comprehensive.
On the other hand, re-emerging disease is also a threat that often arises and a certain period and period. Hemorrhagic and Leptospirosis infections become 2 diseases that can manifest from mild to life threatening.

Seasonal disease, merupakan salah satu masalah dengan angka morbiditas dan mortalitas yang tinggi. Kejadian penyakit karena pergantian musim selalu terjadi sepanjang tahun. Influensa merupakan penyakit yang sering terjadi, dan saat ini upaya prefentif dan kuratifnya masih belum komprehensif.