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HLTB21H3 (200)
Lecture

Lecture 4


Department
Health Studies
Course Code
HLTB21H3
Professor
Caroline Barakat

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HLTA031H3 : Plagues and People
Tuesday, June 7
Lecture FOUR
Tuberculosis- White Plague
History :
TB present since antiquitiy
Egypitian mummies (2400 BC)
Phthisis” or “consumption
Hippocrates: 460 BC: pulmonary due to evil air , not as
contagious
Aristotel : 384-322 BC : bad and heavy breath.
TB documented : Egypt, India , China
Typical skeletal abnormalities. (POTTS DEFORMITY)
TB Limited to animals , until our lifestyle change.
Tuberculosis pathogen : more epidemic in humans is related
to the host population , and changes that occurred in the
environment.
kings evil or royal touch” (500-1500) , but TB Can become
dormant ; they took credit from this type of healing.
(1546) FRACATORIOUS : germ that causes TB that can be
transmitted from one to another.
(1629) CONSUMPTION : leading cause of death in London
(1679) FRANCISCUS D SYLVIUS discovers the lung nodules
“tubercles” : where did it come from
(1720) BENJAMIN MARTIN : speculates that TB may be
communicable from one indiv to another.
(1839) tuberculosis : first used .
19th century : TB SPREAD TO THE REST OF EUROPE by
1900 , NORTH AMERICA
Mid 19th century : TB Was romanticized , eroctic (not feared)
Opera Productions : LA traviate (1853) La Boheme (1895)
Classical movie : Camille (1936) Based on
Alexandre Dumas Novelthe woman of camellis”
TB CAN BE CURED 1845 DR BREHMER : TB IS
CURABLE : rest , good nutrition , fresh air
LUXURY SANTORIUM : DAVOS ,
SWITZERLAND
(1854) Jean-Antoine Villemin specific
microorganism as cause.
(1882) = Dr. Robert Loch : mycobacterium tb .
developed the “tuberculin” test. (first skin test )
(1895) Wilhelm Konrad Von Rontgen- use of
radiation for TB in lungs ( still used)
ETIOLOGY :
Agent : Tubercle bacillus germ mycrobacterium
tb , an acid-fast bacillus.
3 main types : Type 1 in India ; less virulent ,
Type a : Africa , China , Japan , Europpe , N
America , Type B : Exclusively Europe , North
America
Forms of Tb : Bovine types can effect human ; if
there digested through milk ; before pasturation of
milk and cheese. BOVINE MAY LEAD TO TB .
WHO : infants , young children ; fatal within a few
weeks or days.
HOW : Spread through the air by coughs or
sneeze ; every drop of nuclei can contain 1-3
bacilli
WHAT HAPPENS : TB BACILLI can remain
viable throughout the hosts lifetime
Infection can remain dormant until resistance fails
Can cause active disease.
INDEFINTIE VARIABLE INCUBATION PERIOD
Only people who have TB IN LUNGS : are
infectious (Active)
Left untreated may affect 10-15 every year ; Potts
disease or other parts cannot be spread as quickly.
If person had TB and was cured , they could easily
get it again .
MODES OF TRANSMISSION : inhale droplets; can
cause sickness right away. ( forms a
GRANULOMA) in lung tissue : several TB.
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