Tuberculosis control in Hong Kong
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چکیده
Tuberculosis (TB) is an old disease. Fragments of the spinal column from Egyptian mummies show evidence of TB over four thousand years ago. Large-scale epidemic of the disease occurred in the recent centuries. In 1958, Grigg pointed out that the shape of the epidemic curve for TB is the same as that for any other infectious disease, if one adjusts the time scale to allow for the roughly 300-year duration of a TB epidemic. The TB epidemic started in Europe over three centuries ago. The TB morbidity and mortality began to fall well before introduction of BCG vaccine and effective treatment. The TB epidemic in Asia started much later, and hence is probably in a different epidemiological stage as compared to the rest of the developed world.
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