Hur kan difteri smittas?
Difteri smittar endast mellan människor genom kontakt med saliv, till exempel vid kyssar. Du kan också smittas om du dricker ur samma glas eller flaska som en smittad person. Det är ovanligt att en person smittar någon utanför den allra närmaste vänkretsen eller familjekretsen.
Hur får man lepra?
Smittan sprids via luften, och man smittas sannolikt genom att man andas in bakterierna. Dessa utsöndras främst från personer med så kallad lepromatös lepra (se nedan). Sjukdomen drabbar endast människan. Inkubationstiden är lång och det går ofta många år innan sjukdomssymtom utvecklas.
What is Corynebacterium diphtheria?
Corynebacterium diphtheriae. Diphtheria is a toxicosis caused by infection with Corynebacterium diphtheriae. The genus and species names are derived from Greek roots: korynee (“club”) after the microscopic appearance of the organisms and diphtheria (“leather hide”) for the pseudomembrane that is the hallmark of respiratory tract infection.
What is the pathogen of diphtheria?
Pathogen and Disease. Corynebacterium diphtheriae is the bacterium that causes the disease diphtheria. Corynebacterium diphtheriae is a rod-shaped, Gram positive, non spore-forming, and nonmotile bacterium. Although the geographic occurrence for the disease is worldwide, it is mainly to be found in tropical regions and underdeveloped countries.
What is the best culture medium for Corynebacterium diphtheriae?
An enrichment medium, such as Löffler’s medium, is used to preferentially grow C. diphtheriae. After that, a differential plate known as tellurite agar, allows all Corynebacteria (including C. diphtheriae) to reduce tellurite to metallic tellurium.
What are the possible complications of Corynebacterium diphtheriae infection?
Corynebacterium diphtheriae causes several forms of clinical disease, including membranous nasopharyngitis, obstructive laryngotracheitis, and cutaneous infection. Complications can include airway obstruction from membrane formation and toxin-mediated central nervous system (CNS) disease or myocarditis.