On November 26, 2021, the World Health Organization classified a new corona virus variant B.1.1.529 (variant of SARS-CoV-2), and named it Omicron.  WHO has declared Omicron as a ‘Variant of Concern’. Omicron is a Variant of Concern All viruses constantly change through mutation and as expected, new variants of the human corona virus that causes COVID-19 will continue to emerge.   A new virus variant has one or more mutations that differentiate it from the predominant virus variants already circulating among the general population. Scientists have expressed concern about the Omicron variant because the large number of mutations makes it stand out over prior virus mutations.  These mutations may make the virus more easily transmissible.  There is also some evidence to suggest re-infection rates are higher with this variant, but this is preliminary and more research is underway. The concerns about Omicron and other variants like the Delta variant leads to questions amongst the public and sanitation professionals about whether the disinfectants they are using now will be effective against the new corona virus variants. Do disinfectants kill newer strains of coronavirus including Omicron? The EPA and CDC recommends List N disinfectants for all variants of SARS-CoV-2; there has not been a change regarding the efficacy of disinfectants. Understanding EPA LIST N Disinfectants for Corona Virus (COVID-19) The EPA developed the LIST N of disinfectants that are expected to be effective against SARS-CoV-2, the human corona virus that causes COVID-19.  The purpose was simply to give the public quick access to a comprehensive list of disinfectants they could use confidently to disinfect surfaces against the virus. If you want to search list N for a particular disinfectant, please note you should do it by EPA registration number, which is clearly listed on the label for any disinfectant.  If the product does not have an EPA registration number, you won’t find it on list N.  Below i