Which of the following conditions would require contact precautions?

Contact precautions are necessary for conditions where transmission can occur through direct or indirect contact with contaminated surfaces or secretions. In the case of respiratory syncytial virus (RSV), it is highly contagious and can spread through contact with respiratory droplets or surfaces that have been contaminated by the virus.

RSV is particularly concerning in healthcare settings, especially for young children, the elderly, or immunocompromised patients. The virus can survive on surfaces for several hours, and practices such as hand hygiene and the use of gloves and gowns are crucial to prevent its spread among patients and healthcare workers.

While measles is airborne and requires airborne precautions, streptococcal pharyngitis primarily spreads through respiratory droplets, necessitating droplet precautions. Influenza also spreads through respiratory droplets and therefore requires droplet precautions as well. In contrast, RSV's mode of transmission emphasizes the need for contact precautions to ensure that all potential avenues for infection spread are managed effectively.