T Level Health and Science: Infection Prevention and Control

Infection control is a subject where knowing the words is not the same as knowing which one applies. Three of the four options in the opening question name real links in the chain of infection, and a learner who half-remembers the chain can argue themselves into any of them — washing hands between tasks breaks the mode of transmission, because the hands were how the organism was going to travel, and it does nothing to the reservoir or the portal of entry. The same pattern runs through the set. Sterilisation and disinfection are used interchangeably in ordinary speech and are not interchangeable here: one removes everything including spores, the other reduces what is present to a level considered safe. Cleaning has to come before disinfection because organic matter physically shields organisms from the disinfectant, so skipping it does not merely reduce the effect, it defeats the process. Gloves do not make hand hygiene unnecessary, and the order in which protective equipment comes off matters because the outside of it is the contaminated part. Every workplace is invented, no question describes anyone in a way that implies a diagnosis, and the item about an unwell worker is about following the reporting policy rather than about anyone's health. Zestly is an independent study tool. It is not affiliated with any exam board and it is not an exam centre.

• Name the link in the chain of infection that a given precaution breaks
• Separate cleaning, disinfection and sterilisation, and say what each achieves
• Explain why visible soil must be removed before a disinfectant can work
• State why hand hygiene is still required after gloves are removed
• Choose protective equipment from what the task involves rather than from habit
• Explain why the order of removal matters, in terms of where the contamination sits
• Give the purpose of waste segregation and of standard precautions
• Say what aseptic technique protects, and what it does not claim to achieve

Which link in the chain of infection is broken when staff wash their hands between one task and the next? — The mode of transmission, because hands are how the organism would have travelled from one place to the next.