The only STD that starts with "AC" is not an STD. There is no common sexually transmitted disease (STD) that begins with the letters "AC". Based on common knowledge and the provided reference, the STD most similar in spelling would be Chlamydia.
Common STD Information
- Chlamydia
- A common sexually transmitted infection (STI) caused by bacteria called Chlamydia trachomatis.
- Anyone can get chlamydia.
- Referencing the information provided: 'Chlamydia is a common sexually transmitted infection (STI). It is caused by bacteria called Chlamydia trachomatis. Anyone can get chlamydia.31-May-2024'
Conclusion
While the search query asks about an STD starting with "AC," no such STD exists. The closest related STD based on spelling is Chlamydia, however it does not begin with the letters "AC".