Which page and practice can prevent the spread of the flu a. covering coughs with your elbow b. brushing and flossing your teeth c. taking a fever reducer d. washing fresh fruit before eating them

Which of the follow is good way to gauge musculature endurance?

Burns are devastating and debilitating because of loss of fluids and electrolytes from the body. how do physicians estimate the extent of burn damage associated with such dangerous fluid loss?

[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.