- "Rustlung, Imulsion sickness. Cases have been popping up all over since the Lightmass Bombing. Sure is a horrible way for a warrior to die."
"They say it's not, but I would keep my distance."
"No argument here."
- — Tai and Dom discussing Rustlung
Rustlung was a condition brought on by the inhalation of Imulsion vapour and is the first stage of Lambency in humans. It was first documented 100 years ago at New Hope but became widespread among the human population of Sera a few months after the initial detonation of the Lightmass Bomb, which vaporized much of the liquid Imulsion beneath the planet's surface.
The disease infected many Gears (Including Echo-Nine) and Stranded alike. The disease likely got its name from the brown liquid that is coughed up/vomited which has a rusty brown color. Its symptoms include brown and red phlegm, vomiting, trouble breathing, and coughing. The COG administration covered up the effects of Rust Lung out of fear of the real health risks becoming known.
During the Lambent Pandemic, Rustlung began to spread rapidly in Mercy and other locations near Imulsion, and a new form of Lambent human emerged - the first known cases of Lambency in humans since the early Pendulum Wars.
Rustlung ceased to occur after the Imulsion Countermeasure Weapon was detonated, erasing all Imulsion across Sera including all infected cells in humans, while also killing off all Lambent lifeforms.
Ambulance Driver's log
Driver: Wayne Mitchell
Patient #1: 33 yr. old male
Symptoms: Coughing up blood & brown mucus, nausea, minor bleeding from ears
Patient #2: 21 yr. old male
Symptoms: Nausea, coughing up blood & reddish-brown mucus
Patient #3: 36 yr. old female
Symptoms: Unconscious, blood & reddish-brown mucus coming from nose & mouth
Patient #4: 24 yr. old male
Symptoms: Coughing up blood & dark brown mucus, complaining of severe chest pain & trouble breathing
Doctor's Journal - Dr. Nicolette Shannon
Dr. Merriweather mentioned that she's seen numerous patients exhibiting similar symptoms, even paranoia and aggression, but she appears to be less concerned than the rest of us. I'm starting to wonder whether her close ties to the COG administration could be affecting her judgment about the patients' welfare. Going to follow up on this with the director tomorrow.... If we aren't taking care of our soldiers, who will?
Jacinto Medical Center File - Jonathon Harper
Patient is a 9-year veteran who has recently experienced vertigo, persistent cough, and insomnia. Was stationed in the Timgad area for 2 months after Lightmass offensive, then assigned to Jacinto perimeter patrol last 4 months. Symptoms began about 1 month ago. Physical and diagnostic evaluation showed no chronic illnesses and no signs of bacterial infection. Prescribed a medium-strength antihistamine, released patient, and gave clearance for further duty. Expect a full recovery, with no side effects.
Dr. Vivian Merriweather