Key words

🧪 Neisseria & Haemophilus (The Fastidious)

• N. gonorrhoeae: Glucose (+), Maltose (-).

• N. meningitidis: Glucose (+), Maltose (+).

• H. influenzae: Needs X and V factors (Satellitism).

• H. ducreyi: Needs X only (School of fish).

🚩 Red Flag Buzzwords (Instant ID)

"Mercury Drops" —> Bordetella pertussis

"Fried Egg" Colony —> Yersinia pestis

"Swarming" —> Proteus

"Bull Neck" —> C. diphtheriae

"Safety Pin" —> Yersinia or H. ducreyi

"Actin Rockets" —> Listeria

"Rice Water" —> V. cholerae

"School of Fish" —> H. ducreyi