Dengue virus (DENV) is a mosquito-borne flavivirus and a major international public health concern in many tropical and sub-tropical areas worldwide. DENV is divided into four major serotypes. and infection with one serotype leads to immunity against the same. but not the other serotypes. https://bookmarksaifi.com/story19588342/control-of-h1n1-influenza-outbreak-a-study-conducted-in-a-naval-warship