The diseases listed do not necessarily represent the total disease burden experienced by the local population.
The risk to an individual traveler varies considerably by the specific location, visit duration, type of activities, type of accommodations, time of year, and other factors.
All systems of measurement use units whose amounts have been arbitrarily set and agreed upon by a group of people.
Several systems of measurement are in common use, notably the United States Customary System and the metric system.
We read every letter, fax, or e-mail we receive, and we will convey your comments to CIA officials outside OPA as appropriate.
However, with limited staff and resources, we simply cannot respond to all who write to us.
The standards for the base units, except for the kilogram, are defined by unchanging and reproducible physical occurences.
For example, the meter is defined as the distance traveled by light in a vacuum in 1/299,792,458 of a second.
strata there are found the fossils of monsters now almost completely extinct; the subsequent relics discovered in what are called the Tertiary formations seem the connecting, or at any rate intercepted links, between the antichronical creatures, and those whose remote posterity are said to have entered the Ark; all the Fossil Whales hitherto discovered belong to the Tertiary period, which is the last preceding the superficial formations.
phenomenon north of Red River, where the surface of the earth, in considerable tracts of country, is covered with broad slabs of sandstone, having the form and position of grave-stones, and looking as if they had been forced up by some subterranean agitation.
Derived units can be divided into two groups—those that have a special name and symbol, and those that do not.