Plague is mainly a disease of ____
rodents
most severe Plague in history
Black Death
(75-200M deaths)
3 biovars of Plague
[ amo ]
Antiqua
Medievalis
Orientalis
2 biovars in Central Asia
Antiqua & Medievalis
biovar in Africa
Antiqua
biovar that is widespread
Orientalis
most affected place due to Plague
Madagascar (endemic)
(2) preferred season of Plague
warm temp
high relative humidity
Occurence of Plague
• remote places
• delay in dx & tx
Natural disaster & destruction of habitat caused widespread of ___, increasing Plague transmission.
fleas
Incidental host for plague
Humans
Plague
vector —
IH —
vector — fleas
IH — rodents
optimal growth temp of Plague
30 C (capable at 4C — 41C)
What fomites can Plague survive in? (2)
soil
steel
ID of Plague?
clue - low
1 - 10
(4) diseases of Plagues in HUMANS
(2) diseases caused by flea bite
more common septicemic form
2 Septicemic (secondary)
(1) primary septicemic form
[ ehp ]
the zoonotic Plague
Septicemic form
Human-Human transmission Plague caused by:
primary — INHALATION
secondary — infected blood to LUNGS
Pneumonic form
most common Plague
Bubonic
self-limiting plague
Rare form (pestis minor)
Plague that causes swollen femoral lymph nodes as clinical signs
Bubonic form