The Seattle Yacht Club is closed until March 15 after an outbreak of the Norovirus has made about 150 guests and employees ill since March 1.

Club General Manager Steve Hall said the club voluntarily closed in order to sanitize its facilities.

Hall said the first sign of an outbreak was on March 1 and the club contacted Seattle & King County Public Health for guidance on how to manage the situation. The outbreak seemed to be under control until Saturday when several people who attended a function the previous night became ill.