Typhus , Urease positive organisms , Picornavirus

Typhus: Epidemic Typhus: etiologic agent, vector

ePidemic typhus:
Etiological agent: Rickettsia Prowazekii.
Vector: Pediculus corporis (human body louse).
· This is in contrast to Endemic typhus.

Urease positive organisms           PUNCH:

Proteus (leads to alkaline urine)
Ureaplasma (renal calculi)
Nocardia
Cryptoccocus (the fungus)
Helicobacter pylori

Picornavirus: features        PICORNAvirus:

Positive sense
ICOsahedral
RNA virus