In a pilot study conducted by Ayouba et al. (A-38), researchers studied 123 children born of HIV-1-

infected mothers in Yaoundé, Cameroon. Counseled and consenting pregnant women were given a single dose of nevirapine at the onset of labor. Babies were given a syrup containing nevirapine within the first 72 hours of life. The researchers found that 87 percent of the children were considered not infected at 6–8 weeks of age. What is the target population? What is the sampled population?