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Rickettsiarickettsii

Rickettsiarickettsiiis anorganismthat belongsto thespottedfevergrouporganisms.Itis a unicellular organismwithout spore-forming characteristics.Itdoesnot an observablenucleus,anditis a gram-negative coccobacillus. Theorganismis observedto haveobligate parasital characteristics,anditexistsin thecellsof theorganisms(McQuiston and Palmer 41).

Theorganismfindshomein everypartof theworldexcept forverycoldlocalitiesin theAntarctica. However,theUnited States of America is reportedto havethehighestcasesthat manifestthemselves in themonthsof lateApril towards September. Theperiodcoincideswith thetimewhenthehostticksare in largenumbers(Parola,Socolovschi, and Mediannikov 658).

Rickettsiarickettsiitransmissionoccursin two majorways.Thefirstoneis through bitingby thehosttickthat has alreadyderivedtheorganismfrom its host.Itpassesthison to thenextorganism.Second,itis transmittedby feedingon productsthat havefecal elementsfrom an infectedanimal(Allen108).

Theorganismcausesan infectioncalledRocky Mountain Spotted Fever (RMSF). Theinfectionis not fataliftreatedduring theearlystages.Fatalityratesrangebetween 1% and40%. Patientsexperiencehighfever,poorappetite,vomitingandnausea.Acoupleof dayswith theinfectionresultsto pinkrasheson theskinaround thelowerarmandlimbs.Latermanifestationsincludediarrhea andjointpains(McQuiston and Palmer 41).

Immunoflourenceassay isusedin thelaboratoryto forproperdiagnoses.Themicroorganisms’ DNA in thebloodcellscan be detectedusingthepolymerase chainreaction.Doxycycline andChloramphenicol are thecommonlyusedantibioticsto treattheinfection(McQuiston and Palmer 43). Globally, over50% oremerginginfectionsare associatedwith rickettsial infections.Thetransmissionratehas reducedover theyearswith consistently decreasing incidencesin America (Allen 108).

Inconclusion,there is noavailablevaccine to preventtheinfection.Peopletravellingto thezonesshould usea repellent on their clothes.Thecommononeis Dimethyl Phthalate.

References

Richards,Allen L. &quotWorldwide detection and identification of new and oldrickettsiae and rickettsial diseases.&quot FEMSImmunology &amp Medical Microbiology64.1 (2012): 107-110. Print.

McQuiston,Paddock and Palmer, Azad. “Public health: rickettsial infectionsand epidemiology.” Intracellularpathogens II: Rickettsiales,(2012): 40-83. Print

ParolaPaddock, Socolovschi Labruna and Mediannikov Kernif. “Update ontick-borne rickettsioses around the world: a geographic approach.”Clinicalmicrobiology reviews26.4,(2011): 657-702. Print.

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