They are staffed with quarantine medical and public health officers from CDC. These health officers decide whether ill persons can enter the United States and what measures should be taken to prevent the spread of infectious diseases.
[ËpweÉ¾to Ëriko]), officially the Commonwealth of Puerto Rico (Spanish: Estado Libre Asociado de Puerto Rico, literally the Free Associated State of Puerto Rico), is a United States territory located in the northeastern Caribbean.uerto Rico's rich history, tropical climate, diverse natural scenery, renowned traditional cuisine and attractive tax incentives make it a popular destination for visitors from around the world.
The Puerto Rico Trench marks a boundary where two tectonic platesâthe North American plate and the Caribbean plateâslide past each other, with the North American plate also subducting or sliding beneath the Caribbean plate. Water depths of more than 8 km (5 mi) make the Puerto Rico Trench the deepest part of the Atlantic Ocean. It is less deep near the Lesser Antilles, where the component of subduction is larger. Many earthquakes and tsunamis resulting from the tectonic-plate motions have occurred in historical time in the northeastern Caribbean.