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What the name of the resource to access for relevant hygiene practices
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Integrated pest management is a process involving common sense and sound solutions for treating and controlling pests, including inspection, identification and treatment. true false
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Health, 22.06.2019 15:20
[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 6โ9), 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 salkโs vaccine.what was the point of giving saline solution to the children who didnโt get the vaccine? explain briefly.
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What the name of the resource to access for relevant hygiene practices...
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