King Salman Humanitarian Aid and Relief Center (KSrelief) has launched a campaign of fog-spraying and raising health awareness of the dengue fever, in Aden Governorate, Yemen, it was reported today. The campaign, launched yesterday, will continue for 18 months and will be implemented in three phases. This comes within the framework of the humanitarian and relief aid being provided by Riyadh-based KSrelief, the Kingdom of Saudi Arabia's relief arm, to the Yemeni people.