In recent weeks, Dengue fever has started to spread in some areas. Every year, during the rainy season, stagnant water leads to the outbreak of Dengue fever, threatening public health, especially children.

Annually, hemorrhagic Dengue fever becomes more prevalent during rainy months and peaks during October - November. Early signs are not highly specific and can be misdiagnosed. For how many days should a fever last before testing for hemorrhagic Dengue fever should be carried out?