What ratio of Americans infected with HIV have no idea they have the disease?

The correct answer indicates that approximately 1 in five Americans infected with HIV are unaware of their infection. This statistic highlights a significant public health challenge, as individuals who do not know their HIV status are less likely to seek treatment, which can lead to further transmission of the virus. It underscores the importance of regular testing and education around HIV to improve awareness rates and encourage more people to get tested.

This emphasis on awareness is crucial because it illustrates the need for effective outreach and testing programs aimed at reducing the number of undiagnosed cases. By recognizing that a significant portion of those infected are unaware of their status, public health efforts can be tailored to target education and prevention strategies more effectively. The other options, while they may seem plausible, do not accurately reflect the most recent statistics regarding undiagnosed HIV infection rates in the American population.