Which is true about eastern equine encephalitis?

Correct Answer: D

Rationale: Eastern equine encephalitis has a high mortality and morbidity rate.

Correct Answer: D

Rationale: All infants born to HIV-positive mothers should receive prophylaxis until HIV is ruled out.

Correct Answer: D

Rationale: All listed are recognized sources of Giardia transmission.

Correct Answer: A

Rationale: Otitis media (A) is the most frequent measles complication, especially in children, due to secondary bacterial infection, per CDC data, outranking rarer issues like myocarditis (B), encephalomyelitis (C), pneumonia (D), or SSPE (E).

Correct Answer: B

Rationale: Latent TB is treated with isoniazid alone (B) for 6-9 months, per CDC guidelines, to prevent active disease, unlike multidrug regimens (D, E) for active TB.