Infection-control principles

1. 1

   Core concept

   CDC Standard Precautions apply to all patient care regardless of a known infection diagnosis. Risk assessment guides hand hygiene, personal protective equipment, respiratory etiquette, handling of equipment and environmental cleaning. Transmission-Based Precautions are additional controls for certain suspected or known infections and require facility-specific directions.

2. 2

   Apply the concept

   Classify activities by potential exposure rather than whether a resident 'looks sick.' List what a worker should verify before entering an area with special signage and where to obtain supervisor clarification about PPE and assigned duties.

3. 3

   Professional decision-making

   Isolation signage, changing policies and risk categories require current infection-prevention leadership guidance. Never assume gloves replace hand hygiene or that one PPE type suits every exposure.

4. 4

   On the job

   • Treat every resident as possibly carrying an infection. That is the idea behind Standard Precautions.
   • Clean your hands before and after resident contact and after removing gloves.
   • Choose protective equipment based on the task and the expected exposure, as your facility directs.
   • Read isolation signs before entering a room and ask a supervisor if anything is unclear.
   • Cover coughs and sneezes, and keep clean and dirty items apart.
5. 5

   Case study

   An aide is asked to assist a resident and sees new contact precaution signage that they have not been trained to interpret.

   Think about what you would do, then show the recommended response

   Pause safely, obtain the facility's instructions and appropriate equipment, and consult an authorized supervisor before proceeding.

6. 6

   Your practice task

   Standard vs additional precautions concept map with a stop-and-ask decision tree. Check yourself: Standard Precautions apply to every resident. Additional precautions recognized as task/infection-specific. Uncertain PPE triggers qualified consultation.

7. 7

   Common misconception

   The absence of visible symptoms does not eliminate infection-control obligations.

8. 8

   Check yourself

   1. Do Standard Precautions apply only to residents with a known infection?
   2. What are Transmission-Based Precautions?
   3. You see a precaution sign you don't understand. What do you do?

   Show the answers

   1) No. CDC Standard Precautions apply to all resident care. 2) Extra precautions used, in addition to Standard Precautions, for certain suspected or known infections. 3) Stop, get the facility's instructions and the right equipment, and ask an authorized supervisor before entering.

Checked against the official sources listed below on November 9, 2026. Educational only: not medical, legal or regulatory advice, state-approved training, or certification.