Trichomoniasis is a sexually transmitted infection (STI) which is most often spread through vaginal, oral, or anal sex. It can also spread through genital touching. People who are infected may spread the disease even when symptoms are not present.
The manufacture of US paper currency is handled by the Bureau of Engraving and Printing (BEP). The main facility is in Washington, DC. There is a also a facility in Fort Worth, TX that is more recent (opened in 1991).
The Bureau of Engraving and Printing officially took over production of postage stamps for the United States government in July 1894. Paper currency was later produced on hand presses around 1918, utilizing plates capable of printing four notes per sheet.