Which of the following is true regarding blood-borne infections?

Blood-borne infections are pathogens that are transmitted through contact with infected blood and other bodily fluids. The correct statement emphasizes the potential seriousness of these infections, as they can lead to severe health complications, including chronic diseases and even death. Examples of blood-borne infections include HIV, hepatitis B, and hepatitis C, which not only pose significant health risks to individuals but can also lead to widespread public health concerns if not managed properly.

While the other options mention various aspects of transmission, age factors, and prevention methods, they do not accurately represent the nature of blood-borne infections. For example, stating that they can only be transmitted through air is incorrect since these infections specifically require contact with infected blood. Additionally, the notion that only older people are at risk is misleading, as individuals of all ages can be susceptible, particularly those engaging in risky behaviors or certain medical procedures. Lastly, while some infections can be managed or prevented through medications and vaccinations, oral medication is not a universal method of prevention for all blood-borne infections, which can vary widely in their prevention strategies. Thus, the focus on the serious health issues associated with these infections is both accurate and crucial for understanding their impact.