1. Referring to Reston, Virginia: "The Reston monkey house was a small, cinder-block building... The monkeys lived in cages stacked three high... It smelled of monkey shit and disinfectant." (This quote, while not giving a precise address, strongly establishes the setting as the Reston monkey house, a specific location crucial to the plot's beginning.)
2. Referring to a U.S. Army facility (Fort Detrick is implied but not explicitly named): "The lab was a windowless concrete bunker, and it was filled with the hum of machinery." (While not specifying the base by name, the description strongly suggests a high-security, possibly military, research facility in the U.S., the general setting for much of the book's action.)
3. Referring to a general African setting: "The air hung heavy with the smell of woodsmoke and dust. The sun beat down mercilessly..." (This quote does not pin down a single location in Africa, but it sets the scene in a hot, rural area of the continent, crucial to the origins of the Ebola outbreak described in the book.)
It's important to note that exact locations are often alluded to rather than stated explicitly in *The Hot Zone*, adding to the suspense and atmospheric effect of the narrative.