Health officials said one of the most common sexually transmitted diseases in Polk County -- gonorrhea -- is becoming resistant to antibiotics.
Doctors still have one antibiotic treatment option for the disease, but that is also showing signs of resistance.
If left untreated the disease can cause pelvic inflammation, severe pregnancy complications and infertility in women.
"Gonorrhea is a sexually transmitted disease that until recently has been easily treated with antibiotics. Resistance to commonly used antibiotics to cure the infection was detected several years ago in Japan and has spread to Europe and now North America," said Rick Kozin, Polk County Health Department director.
Officials said many STDs have no signs or symptoms. Anyone who is sexually active should be tested at least once a year.
The Polk County Health Department offers confidential STD testing and treatment.