Four influences on early sexual activity

[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.

If a social worker goes around boasting to clients and co workers, it may make the listener feel inferior, judged, maybe insignificant how do you feel when someone is boastful and self absorbed when providing you a professional service? why?

About how many individuals in the us go bankrupt each year due to medical bills?