sanitary cordon

See: quarantine
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A triple sanitary cordon was established, and triple barriers were built around Alghero's boundaries.
During the 15th and 16th centuries, quarantine and sanitary cordons were imposed.
This theory explains why measures such as quarantines, sanitary cordons, isolation of persons with and suspected to have plague and with objects used by them, disinfection of houses, and disinfection of textiles were implemented beginning in the early 1500s.
A sanitary cordon has been erected around the players and Keep Out signs thrust in journalists' faces.
Since the fourteenth century, quarantine has been the cornerstone of a coordinated disease-control strategy, including isolation, sanitary cordons, bills of health issued to ships, fumigation, disinfection, and regulation of groups of persons who were believed to be responsible for spreading the infection (4,5).
By the middle of the nineteenth century, an increasing number of scientists and health administrators began to allege the impotence of sanitary cordons and maritime quarantine against cholera.
They complained that the free movement of travelers was hindered by sanitary cordons and by controls at border crossings, which included fumigation and disinfection of clothes (Figures 1-3).