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PLENARY

DISCUSSION

ALLPPT.com _ Free PowerPoint Templates, Diagrams and Charts

Faculty of Medicine

Andalas University

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22 D

Surya Prima Kemala Gusti

Rahmi Fadhila

Dwi Asrini

Osalina Toemaa

Fi!ri Ful!iadli

Dwiva Try Ra!hmawatiFistha"a!ia

Fitri Amelia Ri"!i

Titi #snaini

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AIR BORNE DISEASE

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The Chain Model of Communicable Dieae

Modes of transmission

Direct contact

Indirect contact

Portals of entry

Susceptible hosts

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Mode of T!anmiion

Direct Transmission Direct Contact Droplet

Indirect Transmission Vehicle-borne Vector-borne Airborne

Vertical transmission (mother to infant)

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T!anmiion of Infec"ion b# Re$i!a"o

!# Ae!ool

Droplets: land directly on mucosal lining of nose, mouth, eyes of nearby persons or can be inhaled

!ighest e"posures #ithin $-% feet

Airborne: aerosols become smaller by e&aporation' small aerosols ( * microns) remain suspended for longer periods, if inhaled tra&el deep into the lungs

Contact: Aerosols+ secretions contaminate nearbysurface Touch surfaces can infect self or others

elati&e contribution of three routes &aries #ith agent

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Mode of T!anmiion %ia

Infec"iou Re$i!a"o!# Sec!e"ion

Airborne: tuberculosis, measles, &aricella, smallpo", A, a&ian influen.a

Droplet: meningococcal meningitis, rubella, pertussis, common cold, A, influen.a/

Indirect contact: (fomite) V, A

/Influen.a traditionally droplet, increasing e&idence for airborne component

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