2/16/2016 Shigellosis Shigellosis Foodborne Outbreaks ·Greatest frequency Major public health concern is among children Incubation period is -500.000 infections per year/40 deaths 1-7 days -27.000 drug resistant infections per yr -72%of cases due to Shigella sonnei ·Symptoms begin at day 3 ·Severity depends on DRUG-RESISTANT the strain SHIGELLA Self-limiting,1-2 weeks 米27.000= ·Complications may occur 中500,000器黑40元 Foodborne Outbreaks Foodborne Outbreaks Humans are the natural reservoir Third leading cause of foodborne Human to human transmission is via fecal outbreaks by bacterial pathogens oral route WHO-Shigella spp responsible for: Most cases are due to ingestion of fecally -164.7 million cases in developing contaminated food or water countries Major cause is poor hygiene of food handlers -1.5 million cases in developed Shigella is spread by fingers,food,feces, countries and flies Highest incidence of shigellosis occurs in summer months 2/16/2016 7 Shigellosis • Greatest frequency is among children • Incubation period is 1-7 days • Symptoms begin at day 3 • Severity depends on the strain • Self-limiting, 1-2 weeks • Complications may occur Foodborne Outbreaks • Major public health concern - 500,000 infections per year / 40 deaths - 27 000 drug resistant infections per yr 27,000 drug resistant infections per yr - 72% of cases due to Shigella sonnei Foodborne Outbreaks • Third leading cause of foodborne outb k b b t i l th tbrea k s b y bac terial pathogens • WHO - Shigella spp responsible for: - 164.7 million cases in developing countries - 1 5 million cases in developed 1.5 million cases in developed countries Foodborne Outbreaks • Humans are the natural reservoir • Human to human transmission is via fecal oral route • Most cases are due to ingestion of fecally contaminated food or water • Major cause is poor hygiene of food handlers • Sh ll igea is sprea d b f f d f b y fingers, foo d, feces, and flies • Highest incidence of shigellosis occurs in summer months