Omicron is the most resistant Covid virus

Differences in environmental stability among SARS-CoV-2 variants
of concern: Omicron has higher stability. In article
(https://bit.ly/3GfLCMd) analyzed the differences in viral
environmental stability between the SARS-CoV-2 Wuhan strain and
all variants of concern (VOCs). On plastic and skin surfaces, Alpha,
Beta, Delta, and Omicron variants exhibited more than two-fold
longer survival than the Wuhan strain and maintained infectivity for
more than 16 h on skin surfaces. The high environmental stability
of these VOCs could increase the risk of contact transmission and
contribute to their spread.