New and poorly understood diseases such as . . . . . . . . virus, hantavirus, and hepatitis C, have emerged, while old diseases like tuberculosis, malaria, dengue fever and . . . . . . . . have mutated into drug resistant forms that are difficult to treat.
A. Ebola, Smallpox
B. Covid, Cholera
C. Ebola, Cholera
D. Ebola, Cancer
Answer: Option C
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