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why is aids normally found in LEDC?

why are some people immune to HIV?

how could scientists create a cure for aids?

what type of pathogen causes tuberculosis?

what is the name of the pathogen wich causes tuberculosis?

what are the symptoms of tuberculosis?

how is tuberculosis transmitted?

what conditions make the spread of tuberculosis more likely?

why has tuberculosis not been eradicated?

what are the primary defenses of humans?