(Bloomberg) — Traces of new coronavirus were found on surfaces in cruise-ship cabins for as many as 17 days after passengers left, researchers said, though it wasn’t possible to determine whether they caused any infections. Researchers looked at the rooms of infected passengers aboard the Diamond Princess, both those who showed symptoms and those who didn’t, according to a study Monday in the Centers for Disease Control and Prevention’s Morbidity and Mortality Weekly Report. The ship, operated by Carnival Corp.’s Princess Cruises, had more than 700 coronavirus cases. It was quarantined for a time off of Yokohama, Japan, and was the largest outbreak outside of mainland China at one point. A previous analysis found that the virus remained viable on plastic and stainless steel for up to three days, although levels fell dramatically over time. It was less stable on copper, where no viable virus was found after 4 hours, and cardboard, which was clean after 24 hours, according to the report in the New England Journal of Medicine. The latest study looked at uncleaned rooms, but other research has found that cleaning the rooms of Covid-19 patients was highly effective at killing the virus. Coronavirus has forced the U.S. cruise industry to shut down after a series of outbreaks at sea, and policymakers are looking for clues about the safety of the vessels going forward. The episodes have caused cruise line stocks to crater. The industry has been hurt in the past by outbreaks of norovirus, sometimes called stomach flu. The CDC report also said that passengers on the Diamond Princess mainly spread the virus before the ship went into quarantine, but infections among the crew peaked afterward. Nick Note: We have tried all disinfect systems. Including bleach, alcohol, pressure sterilization, gamma ray radiation and UV radiation. When then tested samples in our lab for traces. We found that for many different reasons the common sterilization systems DID NOT WORk 100% OF THE TIME. Then I discover in a old journal a report on Ozone Gas O3. Holy shit bat man. It really really works. We put in a simple Ozone chamber EVERYTHING that comes into the compound. We disinfect every single room daily with Ozone gas. And it really really works. Its easy to use, the machines cost virtually nothing. We are prepairng a video to show how these amazing systems work. Nothing and i maen NOTHING ELSE WORKS. The problem with other systems like bleaching and UV light radiation is that the bleach has to contact everything and its impossible. With UZ the surfaces have to exposed to the light again impossible. Ozone on the other hand is a gas and it goes EVERYWHERE. A ounce of prevention is worth a pound of a cure. Prevention is sterilization and a cure is a strong dose of the FDA approved chloroquine and the common antibiotic azithromycin. So why is this not the standard protocol treatment. Why? now that you are getting over your naive stage the answer is painfully obvious. These FDA approved drugs have been around for decades. They are off patent, cheap to make and sold as generics. SO SO that means they sell for pennies a pill. Big pharma especially in America can not make more billions off them. So they are looking for the thousand dollar a pill solution. And in the meantime the body count keeps climb.ing