Pnesyviva

Pnesyviva, short for Pnév̱mona symvivasmós (Greek: lung compromise), is a very harmful and contagious disease primarily dangerous to a few types of seagull and humans. It is spread through coughing.

The most common symptoms of Pnesyviva are coughing, lung pain, and occasionally vomiting in early stages of the disease. In around 5% of cases, the disease may end there. However, most of the time (around 95%) further symptoms will appear, such as severe lung pain, difficulty breathing, severe vomiting. In 90% of cases, pulmonary edema and death will follow. Death most commonly occurs within a week after infection.

Pnesyviva was first exhibited shortly after an emergency landing of a plane on Johnston Island, where the disease is believed to have been first created. Survivors of the crash would bring the disease to civilization and lead to a worldwide pandemic that would kill around 80% of the world population, making it the most dangerous disease in the history of mankind.

In May of 2010, Pnesyviva was identified, and in January 2011, a vaccination was found, which protected the lungs by placing a Pnesyviva-destroying material into the saliva glands, in turn stopping the disease before it could reach the lungs.