Tuberculosis Flashcards
What is the pathogen?
Mycobacterium tuberculosis
Mycobacterium bogus
Organism?
Bacterium
Transmission
M. Tuberculosis Air borne droplets Infected person coughs or sneezes Bacteria is carried in the air Where uninflected person inhales and becomes infected
M.bovis
Transmitted through undercooked meat and unpasteurized milk
Global distribution
World wide
Especially over crowded places Paraguay
Incubation period
Few weeks or several years
Site of infection
In the lungs
In lymph nodes, bones and guts
Clinical features
Coughing blood Chest pain Fever Sweating Weight loss
Methods of diagnosis
Chest x-ray
Treatment
Drugs to take
Why has it become resistant
Many strains of bacterium have evolved resistance to the antibiotics
Bacteria reproduce inside the body cells so hard to get to them
Has to take drugs for a long period of time
Preventing
Contact tracing
BCG vaccines
Cattle routinely tested
Pasteurize milk to kill bacteria