Flashcards in Atypical mycobacteria and M. leprae Deck (6)
why is it called "atypical?"
1. caused neither by TB nor Leprosy
3. PPD (purified protein derivative) and TST (tuberculin skin test) usually negative
4. less aggressive infection, not lethal in guinea pigs
atypical pneumonia leading to systemic dz is very rare w/o predisposing condition such as
HIV, cancer, old age, infected surgical site, diabetes, and lung dz
what are the 4 bugs that cause atypical pneumonia?
1. M. avium-intracellulare
2. M. kansasii
3. M. scrofulaceum
4. M. marinum
what are the 2 mycobacterium strains that is considered as group 1, photochoromogens that produce pigment when grown in light?
1. M. kansaii
2. M. marinum
what is the mycobacterium that belongs to group 2 which produce pigment when grown in dark or light?
M. scrofulaceum what produced scrofula (refers to a lymphadenitis of the cervical lymph nodes associated with tuberculosis as well as non tuberculous (atypical) mycobacteria.)