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Question
Which disease causes over 1.6 million deaths per year worldwide, which is approximately 11% of all deaths related to infectious diseases?A) diphtheria
B) whooping cough
C) pneumococcal pneumonia
D) tuberculosis
Answer
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B) spreads from a common source and could be controlled with adequate clean water and waste sanitation measures.
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Influenza pandemics occur cyclically because
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