過去早有研究指出新冠病毒可於不同物料表面長時間存活,最近澳洲科研機構聯邦科學與工業研究組織(CSIRO)新研究發現,新冠病毒在攝氏20度或室溫環境下,可以在手機屏幕、鈔票及不鏽鋼表面存活28日,更指新冠病毒生命力「極之頑強」。
該研究發表於《病毒學期刊》(Virology Journal),結果發現在攝氏20度或室溫環境下,可於在光滑表面上存活28天,當中包括手機屏幕、紙質或塑膠鈔票,相比起流感病毒在相約環境下可生存是17日,新冠病毒生命力極其頑強。
研究更指出,新冠病毒在炎熱環境存活時間較短,於攝氏40度的環境下,存活在部分材質表面24小時內就不具傳染性,而於平滑且非多孔物料的表面存活時間,較於布料等多孔物料的表面為長。
澳洲疾病預防中心(Australian Centre for Disease Preparedness)專家指出,結果證實新冠病毒在物體表面具傳染性,掌握於物質表面存活時長,可以有助準確預測病毒傳播情況,大眾必須加強防疫措施,定期洗手及清潔常用物品表面。
研究一出亦引起部分專家質疑的聲音,由於現時證實紫外綫可殺死病毒,而該項研究於黑暗中進行沒有受紫外綫影響,因此或與現實生活情況可能有所不同。
來源:BBC、aljazeera
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