Caldea IV

Caldea IV is a planet in the Caldean System, near the edge of the Typhon Expanse and distant from the United Federation of Planets. The Federation has a colony on the planet's surface. A supply depot also orbits the planet.

Sometime between the colony's creation and 2372, a Starfleet starship visited the colony. A Starfleet officer became infected with Caldean Acute Cardiopulmonary Syndrome (CACS), an untreatable condition, and inadvertently spread CACS to the colonists. On attempt to beam the officer back aboard the ship, the transporter's biofilters rejected the signal, and an emergency system diverted him to the orbiting supply depot. He, and a vast majority of the infected colonists, died within a twelve week period after infection.

In 2372, the USS Cantabrian (NCC-24705) crew responded to a distress call to assist the colony in a medical emergency. Once there, Noel Turner was infected with a CACS variant and was isolated aboard the same supply depot. Drs. Marie and Helena Bourget were successful in finding a treatment for this CACS variant, and no colonists were infected with CACS. (: "Isolation")