But Antarctica, with its strict isolation, brought new challenges.
The boy studied Buddhist texts in strict isolation; even visits from his own relatives within the compound were carefully controlled.
Nearly 200 people with SARS are still being treated in hospitals around the world under strict isolation procedures to prevent them from infecting health-care workers.
A Texas hospital said on Monday it has admitted a patient into "strict isolation" to be evaluated for possible infection with Ebola.
She was placed in strict isolation, stayed in the hospital for a month and left without seeming to spread the germ to others.
Mindful of their own health ahead of their mission, astronauts at the Russia-leased launchpad in Kazakhstan remain in strict isolation in the days ahead of any launch to avoid exposure to infection.
Thomas Frieden, the director of the CDC, said the patient was being treated in strict isolation, and that all measures would be taken to ensure that the disease would not spread in the US.
The highest-scoring country is Hong Kong, with a score of 8.7, followed closely by Singapore (showing that economic freedom is measured here in strict isolation from other kinds of freedom).
Among the first people to try to blend ideology, morality and design principles into a carefully planned building were the Quakers of Pennsylvania, whose late-18th-century model was characteristically spare, consisting primarily of cells where convicts were to be kept in strict isolation, that they might better explore their own souls and find a way to God.
"We are using strict isolation procedures in hospital to protect our staff and patients," he added.
For now, health authorities have dropped the strict isolation measures appropriate for SARS.
