If you could look at a similar Geographic Information Systems (GIS) Map of New Jersey counties that charts Chlamydia infections, you would see intensive clusters centered in urban centers and around major hospitals and few infections in wealthy counties.
Chlamydia is a curable sexually transmitted infection (STI), which is caused by bacteria called Chlamydia trachomatis. You can get genital chlamydial infection during oral, vaginal, or anal sexual contact with an infected partner.
It can cause serious problems in men and women, such as penile discharge and infertility respectively, as well as in newborn babies of infected mothers. Chlamydia is one of the most widespread bacterial STIs in the United States. The Centers for Disease Control and Prevention (CDC) estimates that more than 3 million people are infected each year.