澳洲一項研究發現，新冠病毒可以在如手機螢幕、鈔票等物品表面上存活長達28天。圖片來源:法新社專家指出，病毒可經感染者咳嗽、打噴嚏、說話時遺留在物品表面的飛沫而傳播。之前的實驗結果顯示，病毒可在鈔票和玻璃表面存活2至3天，在塑膠和不鏽鋼表面則可存活長達6天。
澳洲科研機構英聯邦科學與工業研究組織（CSIRO）轄下頂級生物安全實驗室澳洲疾病預防中心（ACDP）的最新研究卻發現，在20℃室溫環境下，病毒”極其頑強”，可在玻璃手機螢幕之類的平滑表面，以及塑膠鈔票或紙幣上存活28天之久。在類似環境下，流行性感冒病毒只能存活17天。
研究亦發現，天氣越熱病毒存活時間越短，在某些表面，病毒在40℃環境下，其傳染性在24小時內消失，在平滑、非多孔物料表面，存活時間長於多孔物料如布料。不過這項實驗在黑暗中進行，免卻紫外線的影響。紫外線已被證實可以殺死病毒。一些專家也對在現實生活中，病毒透過停留在物品表面傳播所構成的實際威脅提出質疑。最常見的病毒傳播方式，是直接接觸到感染者咳嗽、打噴嚏或說話時噴出的飛沫。
CSIRO執行長馬歇爾（Dr LarryMarshall）表示，病毒在物品表面存活時間一經證實，就能更準確預測病毒傳播情況並加以控制，更好地保護大眾。研究刊登在《病毒學期刊》（VirologyJournal）。作者指出，新型冠狀病毒能在較低溫下持續存活於不鏽鋼表面，正好解釋為何肉類加工廠和冷藏設施出現疫情。曾經有國家的肉類加工廠和屠宰場爆發大規模疫情，確診工人數以千計。研究人員亦表示，他們的研究結果呼應先前研究指病毒可在新鮮和冷藏食物上存活。
ACDP副總監伊格爾斯（DebbieEagles）表示，研究結果顯示病毒可長時間存活在物品表面，大家更應保持良好習慣，例如勤洗手及經常清潔觸控式手機螢幕及其他物品表面。
A study in Australia found that the new crown virus can survive up on the screen such as mobile phones, money and other items surface 28 days. Photo source : AFP experts pointed out that the virus can be spread by droplets left on the surface of objects when an infected personcoughs , sneezes, or speaks. The results of previous experiments showed that the virus can survive on banknotes and glass surfaces for 2 to 3 days, and on plastic and stainless steel surfaces for up to 6 days.
Australian research institutions of the Commonwealth Scientific and Industrial Research Organization ( CSIRO Australian Center for Disease Control () under the top-level biosafety laboratory ACDP latest research) has found that in 20 at ℃ room temperature, the virus ” extremely tough ” , may in glass Smooth surfaces such as mobile phone screens, and plastic banknotes or banknotes survive for 28 days. In similar circumstances, pandemic influenza virus can only survive for 17 days.
Studies have also found that the hotter the weather, the shorter the survival time of the virus. On some surfaces, the infectivity of the virus disappears within 24 hours at 40 ℃ . On the surface of smooth, non-porous materials, the survival time is longer than that of porous materials such as cloth. However, this experiment was carried out in the dark to avoid the influence of ultraviolet rays . Ultraviolet rays have been proven to kill viruses. Some experts also questioned the actual threat posed by viruses spreading on the surface of objects in real life. The most common mode of transmission of the virus is direct contact with droplets from an infected person who coughs, sneezes, or speaks.
CSIRO chief executive Marshall ( Dr LarryMarshall ) said the virus survive in the surface of items a time proven, we can more accurately predict the spread of the virus to control the situation and to better protect the public. The research was published in VirologyJournal . The author pointed out that the new coronavirus can continue to survive on stainless steel surfaces at low temperatures, which exactly explains why the epidemic has occurred in meat processing plants and cold storage facilities. A large-scale epidemic broke out in meat processing plants and slaughterhouses in the country, and thousands of workers were confirmed. The researchers also said that their findings echo previous studies that the virus can survive on fresh and frozen food.
ACDP Deputy Director Debbie Eagles ( Debbie Eagles ) said that the results of the study show that the virus can survive on the surface of objects for a long time, and everyone should maintain good habits, such as washing hands frequently and frequently cleaning the touch screen and other surfaces.