What measure does a nurse recommend to older clients to decrease the risk of contracting influenza?

Wearing a scarf around the nose and mouth is a strategy to reduce the risk of contracting influenza, particularly for older adults who may be more vulnerable to infections. This measure helps create a barrier against respiratory droplets that can carry the virus, especially in crowded or public spaces. The scarf can trap particles, thereby reducing the likelihood of inhaling the virus.

While staying indoors and relying on others for errands might minimize exposure to crowds, it does not actively prevent the transmission of the virus when in social settings. Shopping later in the day also doesn't guarantee reduced exposure, as the risk remains regardless of the time. Drinking plenty of fluids is essential for overall health and can support the immune system, but it doesn't have a direct effect on influenza prevention.

Thus, wearing a scarf is a proactive and practical method for older clients to protect themselves during flu season by minimizing direct exposure to potential sources of infection.