Which of the following is NOT a type of transmission-based precaution?

Isolation precautions are generally considered a broader category under which specific types of transmission-based precautions, such as contact, droplet, and airborne precautions, are defined. Isolation precautions are used to prevent the spread of infections and can encompass various methods, including the aforementioned types. Consequently, the other choices represent specific strategies used to mitigate the transmission of infections based on how germs are spread, while isolation precautions serve as an overarching term that includes these strategies. Thus, stating that isolation precautions are not a specific type of transmission-based precaution is accurate in this context, as it encompasses various methods rather than being a standalone category like the other options.