Transcript Bio Presentation-2 (TB) Candy

Group members:
4L Fanny Chan
4J Candy Lau
4M Kathy Wong
4P Samantha Cheung
TB=
A common and often deadly infectious
disease caused by mycobacteria(分枝杆
菌 ).Tuberculosis usually attacks the lungs
(as pulmonary TB) but can also affect the
central nervous system, the lymphatic system,
the circulatory system, the genitourinary
system, the gastrointestinal system, bones,
joints, and even the skin.
The route of transmission :
active pulmonary TB cough
sneeze
speak
spit
Transmission can only occur from people with active — not latent — TB . The probability of
transmission from one person to another depends upon the number of infectious droplets
expelled by a carrier, the effectiveness of ventilation, the duration of exposure, and the
virulence of the M. tuberculosis strain.
Symptoms include:
chest pain
coughing up blood
and a productive
Systemic symptoms include:
fever
appetite loss
chills
weight loss
night sweats pallor
There are different treatment for TB patient:
uses antibiotics to kill the bacteria.(Rifampicin and
isoniazid.)
Some uses around 6 to 12 months to entirely
eliminate mycobacteria from the body.
Latent TB treatment usually uses a single antibiotic
active TB disease is best treated with combinations of
several antibiotics
 To reduce the risk of the bacteria developing antibiotic resistance.
People with latent infections are treated to prevent them from
progressing to active TB disease later in life.
People with TB and their contacts are identified
and then treated.
Identification of infections often involves testing
high-risk groups for TB.
Children are vaccinated to protect them from TB.
(No vaccine is available that provides
reliable protection for adults.)
However, in tropical areas where the levels of other species
of mycobacteria are high, exposure to nontuberculous
mycobacteria gives some protection against TB.
This is all of our presentation.