Transcript Black Plague - Kenston Local Schools

Plague
Black
Death
Black Plague
Bubonic Plague
Pestilence
The Great Plague
Three Types of Plague
Bubonic
Plague
Pneumonic Plague
Septicemia Plague (blood
infection)
Bubonic Plague
 Caused
by
bacteria:
– Yersinia pestis

Carried by fleas –
that live on rodents
- often rats (can be dogs,
cats, squirrels, etc.)


During the 1300’s;
One quarter of the
population of Europe
died.
Mortality = 3075%
Pneumonic Plague

Caused by
bacteria:
– Yersinia pestis
Less common than
Bubonic plague
 Most victims die
 Mortality 90-95%
 Infects the lungs
 “Sheepshearer’s
Disease”

Septicemia Plague
Rarest of all plagues
 Mortality near 100%
 Even today no
treatment
 “DIC” = disseminated
intravascular
coagulation

Septicemia Victim
Bubonic Plague Victim

Bubo = tender
“Bubo”
swollen area, often in
the groin area or in
the armpit.

Also appears in area
where flea has bitten
victim
Bubonic
The Black Death
 Victim
recovering
from Bubonic
Plague
 At
one time his
entire body was
black
Black Death Victim
 Same
victim
 Toes have
gangrene
 Probably will
have to be
amputated
Mammalian Victim

Pneumonic plague

Rock squirrel in
Colorado

Coughing up
sputum from
pneumonic plague
Death Toll
 Most
historians agree that the Black
Death killed between 30-45% of the
European population between 1348 &
1350
 25
million people died between 1347
& 1352
CCR5 gene – Delta 32 Mutation
Located on Chromosome 3
 Some people inherit one or two of these
– Dd or dd

– Heterozygous or Homozygous Recessive
Provided resistance against the plague
 Now provides resistance against HIV

CCR5 codes for White Blood Cell
CCR5 Mutation % Europe
CCR5 Mutation = World
News of the Week …
Bubonic Plague In 2015?
Madagascar's Current Plague More
Virulent Than Strain From Dark Ages
 Jan 28, 2015 03:53 PM By Dana Dov

– No, you did not misread the headline to this story.
Not only does the bubonic plague still exist, but it’s
infected hundreds of individuals on the island of
Madagascar, off the coast of Africa. In fact, this is
nearly an annual occurrence for the island nation.
Unlike the plague of the past, however, this form is
not only harder to contain but can kill nearly 24 hours
after initial exposure.
Secrets of the Dead: Black
Plague

https://vimeo.com/55035270
Black Plague
Kristie Kazimir and Alex Bester

http://www.youtube.com/watch?v=bbAJS
GPOv6A