Guernsey has seen a rise in the number of people attending the island's sexual health clinic since it moved to new premises.
The number of chlamydia cases treated at the clinic has risen from seven in the first half of 2008 to 17 treated between January and June this year.
Genital warts cases increased from nine in the first half of 2008 to 39.
The clinic's Dr Nicola Brink said the increases could be attributed to the fact more people were attending.
She said: "We've moved to the Castel Hospital and this has been popular.
"The increase in rates of infection might not be as large as they seem, with more people visiting the new clinic."