Respiratory bacteria

Question 1

Bordetella pertussis

Answer 1

Gram negative.

Question 2

Neisseria meningitides

Answer 2

Gram negative.

Question 3

Haemophilus influenza

Answer 3

Gram negative.

Question 4

Pseudomonas aeruginosa

Answer 4

Gram negative.
Motile with flagellum, oxidase positive, feed on carbohydrates, resilient bacteria that lives in the environment. Opportunistic infection. Transmission can be nosocomial. Forms biofilms. Green/blue in color and smells like grapes.

Question 5

Legionella pneumophila

Answer 5

Gram negative (stain poorly, so use acid fast).
Motile with flagellum.
Obligate aerobe found in the environment.  Opportunistic infection. Transmission by aerosolized particles.  Requires cysteine and ferric iron for growth.  Cut glass appearance on plate of buffered charcoal yeast extract.  Grows slowly. Symptoms 2-14 days post-exposure.

Question 6

Corynebacterium diphtheriae

Answer 6

Gram positive.

Question 7

Streptococcus pyogenes

Answer 7

Gram positive.

Question 8

Mycoplasma pneumonia

Answer 8

Acid fast stain.

Question 9

Staphylococcus aureus

Answer 9

Gram positive.

Question 10

Streptococcus pneumoniae

Answer 10

Gram positive.

Question 11

Mycobacterium tuberculosis

Answer 11

Acid fast rods (Gram stain does not penetrate).
Non-motile, no spores, aerobic.
Special cell wall has cord factor (trehalose dimycolate) that produces caseating granulomas.
Common in Africa and asia. On the rise from HIV.
MDR and XDR on the rise.
Only infects humans. Transmission by air droplets.
Diagnose with PPD, Quantiferon, sputum.

Tx: it’s complicated.