Winter Academy: WAR OF THE WORLDS PUBLIC HEALTH & EPIDEMIOLOGY 11 th & 12 th Grade Ms. Kelly Gallagher Rm B542

How is DZ spread in the class? Is there a pattern? What do DZ students have in common?

Why do you think DZ distributed like this? What exposure might explain why they have DZ? _________________ causes DZ.

Why are these people getting sick? Pathologist: studies microscopic tissue sample & organisms Doctor: studies signs, symptoms, and medical history of individual patients Epidemiologist: studies how a disease is distributed in groups or populations of people

Spread of Infectious Diseases Airborne droplets from the nose/throat when an infected person sneezes/coughs out tiny airborne droplets. The droplets in the air may be breathed in directly by another person or indirectly enter another person through contact with surfaces and hands with the droplets. chicken poxcommon cold diphtheriainfluenza measlesbacterial meningitis mumpsrubella streptococcal sore throattuberculosis

Urine Some infections are spread when urine is transferred from soiled hands or objects to the mouth. Spread of Infectious Diseases cytomegalovirus infection

Spread of Infectious Diseases Fecal-oral some infections are spread when microscopic amounts of feces from an infected person with symptoms (a carrier) are taken in by another person by mouth. It may be passed by soiled hands to the mouth or indirectly by way of objects, surfaces, food or water soiled with feces. hand, foot & mouth disease\hepatitis A viral meningitisrotavirus infection salmonella infectionthrush viral gastroenteritisworms

hepatitis Bhepatitis C HIV/AIDScytomegalovirus infectgion Spread of Infectious Diseases blood/body fluids some infections are spread when blood or other body fluids from an infected person come into contact with the mucous membranes or bloodstream of an uninfected person, such as through a needle stick or break in the skin.

Skin or Mucous membrane some infections are spread directly when skin or mucous membrane come into contact with other skin or mucous membrane. Infections are spread indirectly when skin or mucous membrane comes in contact with contaminated objects or surfaces. Spread of Infectious Diseases chicken poxcold sores conjunctivitishand, foot & mouth disease head liceringworm scabieswarts

Spread of Infectious Diseases sexually transmitted infections these infections are most commonly transmitted by sexual contact. Sexual contact means genital to genital, or oral or genital to anal contact. chlamydiagenital herpes genital wartsgonorrhoea hepatitis BHIV/AIDS pubic licesyphilis

Spread of Infectious Diseases food or waterborne diseases these diseases result from ingestion of water or a wide variety of foods contaminated with disease=causing micro-organisms or their toxins. Often this infections are also spread by the fecal-oral route. botulismcholera listeriasalmonella infection typhoid/paratyphoidbacterial meningitis

Spread of Infectious Diseases saliva some infections are spread by direct contact with saliva (such as kissing) or indirect contact with contaminated objects (such as children sharing toys/putting them in mouth). cytomegalovirus infectionglandular fever hepatitis B

Spread of Infectious Diseases person-to-person spread is rare some infectious disease are almost without exception never spread by direct contact with an infected person. These diseases are usually spread by contact with an environmental source such as animals, insects, water or soil Q feverrabies toxoplasmosisDengue fever MalariaYellow fever lyme’s diseaseamoebic meningitis *soil tetanus *soil

A Mysterious Ailment 1.Read the article 2.Take note of: – Person – Place – Time – Suggested hypotheses

PersonPlaceTime Hypotheses

virus simulation

Jigsaw Discussion: HIV and Teenagers