PPT-Water Borne Pathogens

Presented by Mr Donald LaFara NDEPBSDW Laboratory Certification Program Manager Transmission Infection with E coli O157H7 follows ingestion of contaminated food or water or oral contact with contaminated surfaces It is highly virulent with a low infectious dose an inoculation of fewer than 100 CFU of E coli O157H7 is sufficient to cause infection compared to over onemillion CFU for other pathogenic strains. Pre-Quiz. Question #1. Name three climatic factors that influence. the survival rates and range of disease vectors:. Question #2. Which vector-borne disease is transmitted via. the Asian Tiger mosquito?. Things that make us sick. Protist Pathogens. Chapter . 21. What is a Protist?. Eukaryotes. Anything that can’t be classified as a plant, animal, or fungi. Unicellular and multicellular. 200,000 species. Plumbing – Water Research Foundation project #4606. Dr. . Mark . LeChevallier. , Dr. Zia . Bukhari. , American . Water, . and. Dr. . Nicholas Ashbolt, University of Alberta. , leading . this . project. Important Vocabulary. Contaminate. : To make something impure, unclean, polluted, or harmful. . Food Borne Illness. : Sickness caused by eating foods that have gone bad or are contaminated.. Microorganism. with. ®. Three types of hazards that make food unsafe:. Biological. Pathogens that cause illness. Chemical. Cleaners, sanitizers, polishes. Physical. Bandages, dirt, glass/metal shavings. Hazards in Food Safety. What are Food Borne Illnesses?. An illness that comes from the ingestion of contaminated food. Often called food poisoning. Two types:. Infection: the illness is from organisms that are consumed and continue to grow within the body. Plants provide us with . food. , . materials. . and . breathable air. . . We . depend on plants . for our survival.. But plants can catch diseases, just like we do.. When . there’s . an . outbreak . Year 9. . – The Knowledge – Science – . Spring . 2. 2. . Types of Disease. Types: . Bacteria – may produce poisons (toxins) that damage tissues and make us feel ill. Virus – can only survive inside our cells. They use our cells to reproduce causing cell damage.. Infection: Results when a pathogen invades and begins growing within the host. Disease: Results only if and when normal tissue function is impaired. The body has defense mechanisms to prevent infection (i.e. burns, skin lesions). 1. Reservoir of Pathogen. Contamination of food. Viral or Parasitic. infection. Growth of pathogenic bacteria. Infection. Intoxication. Toxicoinfection. Food+ Live cells. Food +Toxin. Invasive Infection. Cls. 416. FOOD-BORNE DISEASE. s. Food-borne . illness is defined as any illness . occures. due to the . consumption of contaminated . food. . or beverages. . food borne . microbial pathogen. , or a . Friday. Discuss . upcoming Food-Borne Illness Project . Monday. FBI Project. Bread cell phone and hand activity. Three slices of bread will come your way!. Dirty hand. Pass around the slice of bread and touch the white. Study Design. . Hospital based cross-sectional study of all children under five years of age,. Presenting with diarrheal illness seeking treatment,. Parents / guardians consenting for children to participate in the study.. Determinants of health. Person’s individual characteristics and behaviors. Physical environment. Social and economic environment. Source: www.who.int/hia/evidence/doh/en/. Potential . impacts of . climate .