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A study conducted in Japan has compared the survival time of the Alpha, Beta, Delta and Omicron variants on different surfaces. As a result of the study, it has been determined that the Omicron variant has survived on the surface for approximately 21 hours.  

Source: sagliklimanset.com

https://sagliklimanset.com/koronavirus/omicron-diger-varyantlardan-daha-uzun-suere-yuezeyde-kaliyor-146210.html

https://www.polemikhaber.com/m/saglik/japonya-da-korkutan-omicron-arastirmasi-diger-varyantlardan-h63790.html