艾滋病的解析+传播途径+预防知识.ppt

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1、艾滋病及预防WhatisHIV？H-Human-becausethisviruscanonlyinfecthumanbeings.I-Immunodeficiency-becausetheviruscreatesaweakenedimmunesystembydestroyingwhitebloodcells(immunesystemcells)calledT-cellsorCD4cells.V-Virus-becausetheorganismisavirusandisincapableofreproducingitselfwithouthelpfromspecificce

2、llsinthehumanbody."HumanImmunodeficiencyVirus"isaverytinyvirus,muchlikeothervirusesyoumaybefamiliarwith,suchasthevirusesthatcausethe"flu"orthecommoncold.However,HIVisdifferentfromothervirusesbecausetheimmunesystemcanneverfullygetridofit.Thevirushidesintheimmunesystemandothercellsinthebody

3、.HIVcausessignificantdamagetotheimmunesystem,leavingitopentootherdangerousinfections.HIVinfectioncanleadtoAIDS.WhatisAIDS？A–Acquired–becauseAIDSisadiseasethatisnothereditarybutdevelopsfromcontactwith,orinfectionby,adisease-causingagent(inthiscase,HIV).I–Immune–becauseAIDSaffectsthebody'si

4、mmunesystem,whichincludesalltheorgansandcellsthatworktofightoffinfectionorforeignsubstances.D–Deficiency–becauseHIVmakestheimmunesystemunabletofunctionproperly.S–Syndrome–becauseAIDSisacomplexillnesswithawiderangeofcomplicationsandsymptoms."AcquiredImmuneDeficiencySyndrome"isthefinalstage

5、ofHIVinfection.PeopleatthisstageofHIVdiseasearevulnerabletoopportunisticinfections.Whensomeonehasoneormorespecificinfections,certaincancers,oraverylownumberofT-cells,thepersonisconsideredtohaveAIDS.ApersonwithAIDSrequiresmedicalinterventionandtreatmenttopreventdeath.SOHowdopeoplegetHIV/AI

6、DS?HIVisavirusthatlivesandreproducesinbloodandotherfluidsinthebody.Transmissionofthesebodilyfluidsfromonepersontoanothercancauseinfection.BloodVaginalfluidsSemenRectalmucousBreastmilkHowisHIVtransmittedthroughbodyfluids?sexualcontactpregnancydrugusebloodtransfusionwithinfectedblood.occup

7、ationalexposure.organtransplantPreventionPreventingSexualTransmissionAbstinence禁欲BeingfaithfultoyourpartnerCondomsPreventingTransmissionbyInjectionDrugUsePreventingMother-to-ChildTransmissionWorldAidsDay：Dec1st