Like many STDs, genital HPV infections often do not have visible signs and symptoms. One study sponsored by the National Institute of Allergy and Infectious Diseases (NIAID) reported that almost half of the women infected with HPV had no obvious symptoms.
Quick Answer. The United States Census splits the country into four regions: northeast, midwest, west and south. Of these regions, as of 2013 the south has the largest total population with more than 118 million inhabitants or 37.4 percent of the country's total population. Continue Reading.
AAG Center for Global Geography Education. Population Growth in California. Looking at the larger state scale, California is the most populous state in the United States with an estimated 36.8 million residents in 2008 (US Census Bureau 2008a). Its rate of population growth was explosive from after World War II to the first years of the 21st century. Although the rate of growth has slowed recently, it was still among the highest in the U.S. between 2000 and 2005 (Figure 3).