STI

abbreviation for

1. sexually transmitted infection: any infection that is characteristically transmitted by sexual contact and may either clear up or develop into a sexually transmitted disease. Compare STD ( def ).

Word History and Origins

Origin of STI¹

First recorded in 1990–95

Example Sentences

“We see intermittent detections of Clade II in our wastewater,” said Dr. Julia Janssen, the deputy director of the HIV/STI Prevention and Control branch for the San Francisco Department of Public Health.

From Los Angeles Times

Roughly three dozen Planned Parenthood clinics in Texas continue to provide non-abortion services like birth control and STI screenings.

From Salon

Some of the rise may be due to an 8.3% increase in the number of people having STI screening - 4.6% up on 2019.

From BBC

The groups with the highest proportion of people diagnosed with an STI were:

From BBC

Free STI tests are available from GP surgeries and sexual-heath and some family-planning clinics.

From BBC