Chlamydia may hide in the gut and cause repeated infections

What looks like a black channel is shown running diagonally across the image. On either side of the channel are bunches of blue circles of different shapes and sizes with white edges. In some of the blue circles there are green blobs. .

The bacteria behind chlamydia can colonize the gut, and from that hiding place, they may act as a source of repeated infections, new research using miniature intestines suggests.

Chlamydia is the most common sexually transmitted infection (STI) worldwide. The form of the infection that affects humans is caused by a species of bacteria known as Chlamydia trachomatis.