Virginia Mason Issaquah holding flu clinic Haven't had your flu shot yet? Here's your chance. Protect yourself and others. January 24, 2013 5:06 pm If you haven’t had a flu shot yet, Saturday, Jan. 26 a flu clinic is taking place at Virginia Mason Issaquah. Schedule an appointment by calling (425) 557-8000. Flu shots are available by appointment only. FluMist is also available.