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.
The New York Aquarium, Central Park, Prospect Park, and Queens Zoos are open 365 days a year. The Bronx Zoo is closed on New Year's Day, Martin Luther King, Jr. Day, Thanksgiving Day, and Christmas Day. Please note: General admission is free all day on Wednesday at the Bronx Zoo, and it is often very crowded. For your enjoyment, you may wish to plan your visit for another day.