How can the application of insecticides and herbicides affect an individual’s health?

What ingredients used in tobacco products been banned?

[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.

The theory of vicarious liability or ostensible agency can expose a health plan to the risk thatit could be held liable for the acts of independent contractors. factors that may give rise to theassumption that an agency relationship exists between a health plan and its independentcontractors include