Boys and girls experience different changes to their bodies during adolescence

[120 total points] (public health) in one of the largest human experiments ever conducted, in 1954 a randomized controlled trial was run to see whether a vaccine developed by a doctor named jonas salk was effective in preventing paralytic polio. a total of 401,974 children (ages 6–9), chosen to be representative of those who might be susceptible to the disease, were randomized to two groups: 200,745 children (the control group c) were injected with a harmless saline solution (a placebo) and the other 201,229 children (the treatment group t) were injected with salk’s vaccine.what was the point of giving saline solution to the children who didn’t get the vaccine? explain briefly.

Describe in your own words three purposes of human services.

17. susie jones is in the office today to see her regular physician for her 5 year well child check. she is getting ready to start school in a month and needs to have her immunizations updated. what modifier will be used with the preventative service code? explain why the modifier is required for reimbursed of both the well child check and the immunizations