The general term ‘infectious disease’ is used to describe illnesses that are caused by pathogenic microorganisms, such as bacteria, viruses, parasites, or fungi, that can spread, directly or indirectly, from one person to another. Some infectious diseases cause life-threatening illnesses that have high mortality rates. They can present a serious hazard to those who care for the sick, at ho…
Some dictionaries include language names among their entries, and you’ve probably seen lists that provide information about the number of speakers of various languages. When the U.S. Census Bureau compiles its census data each decade, it asks residents what language they speak and publishes that information. At the United Nations, most countries are represented, and their ambassadors must kno…