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Principles Of Public Health week 2 lectures pt 3

Principles Of Public Health week 2 lectures pt 3 -...

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Principles Of Public Health-Communicable Disease Pt 3 Chain of Infection Agent resides in reservoir/host Portal of exit Mode of transmission Portal of entry Infects the new susceptible host Chain of Infection-Reservoirs Natural habitat in which agent lives, grows and multiplies o Human Symptomatic and asympotmatic Chronic carriers o Animal Domestic wild o Environmental Water, soil Chain of Infection-Portal of exit Path by which an agent leaves its source host o Respiratory tract o Urine o Feces o Conjunctiva o Skin lesions o Placental Respiratory Diseases Tuberculosis Diphtheria Pneumonia Influenza Measles Chicken pox Small pox Mumps Alvine Diseases (gastrointestinal) Fecal-Oral Typhoid fever Hepatitis Shigellosis Salmonellosis
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Cholera Amebic dysentery Pinworms Rotavirus Polio Open Lesion Diseases Syphilis Gonorrhea Herpes Smallpox Hiv Chlamydia Modes of Transmission Direct transmission o Direct contact o Droplet spread Indirect Transmission o Airborne o Vehicle-borne o Vector-borne Direct Transmission Direct Contact o Kissing, biting, skin to skin contact and sexual intercourse o Also refers to direct contact with plants or soil harboring infectious agents Droplet Spread o Spray by short range aerosol, large droplets from couhing sneezing, spitting, talking or singing Indirect Transmission Airborne o Microbial aerosols 1-5 um range o Suspended particles of droplet nuclei and dust Vehicle-borne o Food, water, blood, tissues, organs and fomites Vector-borne o Disease transmission by a non-vertebrate host Mechanical Biological What are fomites?
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