This study aims to determine the pattern of a network collaboration between dengue hemorrhagic health surveillance personnel in the city of Semarang and to understand the flow of information deeply. The method of social network analysis / SNA (Social Network Analysis) on formal and informal communication networks between surveillance officers aims to produce sociometry and sociogram d... https://www.diegojavierfares.com/super-save-St-Patricks-Day-Teacher-Shirt-Personalized-Name-Teacher-Shirt-Teacher-Gift-Shamrock-Leopard-Rainbow-St-Patrick-s-Day--great-buy/