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We have some statements about epidemiology here.
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Which of these is false? is it a, if the disease has a long incubation period, it may spread extensively before you recognise the epidemic.
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B, a person exposed to a low dose of a pathogen might not develop disease.
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C, young and the aged are more likely to develop some diseases.
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D, malnourished populations are more likely to develop some diseases.
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Or e, herd immunity happens when a population does not engage in a risky behaviour.
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So, which of these is false? if we have a look at a, a disease with a long incubation period, a great example here is hiv.
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And this spread extensively before the epidemic was recognised.
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There were political factors as well, but one of the issues is that before obvious symptoms occur, it could be a decade...