atypical bacteria

• treatment for mycobacterium marinum infection

  clarithromycin is the preferred choice

  rifampicin and ethambutol also works
• infection caused by mycobacterium marinum?

  skin infections manifesting as a granuloma
• mycopbacterium leprae 


  aetiological agent causing leprosy
• how are spiral bacteria motile?

  periplasmic flagellae
• syphilis is the 4th most commonly-acquired curable STI
• doxycycline should not be given to children under the age of 12 why?

  as it causes irreversible staining of teeth and causes photosensitivity
• ceftriaxone?


  3rd gen cephalosporin with good penetration to CNS
• chlamydiae


  gram-negative bacteria, obligate intracellular pathogens
• why do chlamydiae resemble bacteria?

  have both RNA and DNA, reproduce by binary fission, have a rigid cell wall, have several enzymes, are susceptible to some antibacterials
• all chlamediae are treated with what?

  tetracyclines or macrolides
• rifampicin


  treats TB, 6/12, combination with other anti-TB medicines, drug interactions with contraceptive pill and warfarin
• penicillin

  treats syphilis, lyme's disease, leptospirisis. don't use if allergy
• doxycycline

  syphilis, lyme's disease, leptospirisis, chlamydia, Q fever, phototoxic skin reaction and general adverse effects