Pulmonary Tuberculosis (PTB):
a bacterial infection spread
through inhaling tiny droplets from
the coughs or sneezes of an
infected person. It mainly affects the
lungs, but it can affect any part of the
body, including the tummy
(abdomen), glands, bones and
nervous system.
6 links of infection
Causative agent
Reservoir
Portal of Exit
Mycobacterium
tuberculosis (Mtb)
Sputum, nasal discharge,
blood from hemoptysis,
and saliva with M.
tuberculosis
Mouth and nasal
passages from
shouting, sneezing and
coughing
Susceptible Host
Portal of Entry
Mode of
Transmission
Humans being
exposed to contagious
cases of TB
Mouth and nasal
passages (person
inhales droplet nuclei
containing M.
tuberculosis)
Droplet transmission
PREVENT TUBERCULOSIS by:
Advise client
for BCG
Vaccination
Use personal
cultery
Stay away
from coughing
people
Don't smoke
or drink
Wet house
cleaning and
ventilation
Wash your
hands after
sneezing or
coughing
Consult your doctor regularly,
advise tuberculin tests for
exposed persons and stay active
and stick to treatment plan
Sources:
Centers for Disease Control and Prevention. (2013). Chapter 2: Transmission and Pathogenesis of
Tuberculosis. https://www.cdc.gov/tb/education/corecurr/pdf/chapter2.pdf
Preventing TB. (2022). Who.int. https://www.who.int/activities/preventing-tb