The other virus that causes herpetic eye disease is herpes simplex type 1, or HSV1. Herpes simplex type 1 is the same virus that causes cold sores on the lips and mouth. In the eye, it usually causes an infection of the cornea called herpes simplex keratitis.
Of the five boroughs, the Bronx is the only one on the U.S. mainland and, with a land area of 42 square miles (109 km 2) and a population of 1,438,159 in 2014, has the fourth largest land area, the fourth highest population, and the third-highest population density.
So instead of Bronck's River, it was shortened into The Bronx. The name The Bronx did not refer to the entire area until the 1870s. In 1874, 20 sq miles of Westchester was annexed to NYC, and it was called the Annexed District of the Bronx, referring to the Bronx River, which was the eastern boundary at that time.