Human papillomavirus (HPV) is the most common sexually transmitted infection with most sexually active men and women being exposed to the virus at some point during their lifetime.1,2.
The Great Seal of the United States of America during the war. During the American Civil War, the Union referred to the United States of America and specifically to the national government and the 23 free states and five border states that supported it. The Union was opposed by 11 southern slave states that formed the Confederate States, or the Confederacy..
The United States of America (USA), commonly referred to as the United States (U.S.) or America, is a federal republic composed of 50 states, a federal district, five major territories and various possessions. The 48 contiguous states and Washington, D.C. , are in central North America between Canada and Mexico.