dr. zevin in the room today. also our environmental health in the department of health and housing, hazmat, and food safety. also, if you don't know, we do weathers and measures, so every time you go to the store and put something on a weight to ensure the number of pounds, we license those, and our massage programs in which we provide outreach to massage partners to ensure that they are within the law. we also are doing a lot of work around vision zero trying to have zero pedestrian fatalities, and our lead program is our assistance and diversion program for those who experience addiction. staff will be combined with a quote on what they do what they do, and we encourage everyone to follow on the sf dph facebook and dph twitter, so we want to make sure that we all celebrate public health week, april 2nd through the 8th. i also wanted to just acknowledge the fact that we are -- will be sending, as you know, in september of 2017, we had a terrible hurricane in puerto rico, and one of the doctors

and now i'm going to turn it over to dr. zevin. >> thank you, doctor, and thank you commissioners and director garcia. just a comment on the slide because i get asked a lot of the time, how many homeless people are there, and why are there so many homeless people? and often there is a great deal of anger and often a great deal of anger at people experiencing homelessness. so this is what practicing health care for the homeless medicine in the san francisco department of public health since 1991 has taught me: this much homeless people, this much housing. this much homeless people, this was housing. that's why we have this issue. and when we look at what the health consequences of that are, it really is quite a serious problem. so thinking about how users of multiple systems, we have people who are being seen in our medical system, people seen in our mental health system, people seen in our system for treatment of substance abuse disorders. those systems may not be well coordinated, and even when they are well coordinated, a lot of