While the H1N1 swine flu has had a fairly mild impact to date in Canada, there are signs that it could pack a significant wallop when flu season arrives in three months. The pattern of cases to date is that while most flu cases pass with relatively minor symptoms, a significant number of people are hospitalized and many of them require intensive care, including ventilators, over an extended period of time. The majority of the most serious cases occur with “co-morbidities” (in conjunction with other serious health issues). There was a decided spike in flu cases in the late spring and summer – well past the normal timeline for flu. The City of Toronto has published an updated pandemic flu planning guide for housing and homeless service providers. Meanwhile, a group of health and service providers is meeting to advance the preparedness work, especially among vulnerable populations, including people who are homeless and/or precariously housed, and they have created a web link with resources.  The Wellesley Institute has an on-line resource for pandemic flu planning from an equity perspective.