West Marin’s community organizations are working to fill gaps in Covid testing as the emergence of the Omicron variant highlights the need to keep a close eye on local cases and outbreaks. Last week, a new twice-weekly test site opened in the San Geronimo Valley, and West Marin Community Services hopes to expand similar services to Tomales and Bolinas soon. 

“It’s a critical tool to understanding the spread in a community, to know what…