Pathology, Contraindications & Pharmacology
Recognize risk, adapt thoughtfully, and know when to pause or refer.
Lesson 4 of 18
Pathogens & Infection Control
Pathogens include bacteria, viruses, fungi, and parasites, each with distinct routes of transmission. Infection may be localized or systemic, and some people transmit organisms before obvious symptoms appear. Standard precautions reduce exposure to blood and body fluids regardless of a known diagnosis. Consistent hand hygiene, clean equipment, and appropriate policies protect clients and practitioners.
Key points
- Transmission can occur through direct contact, droplets, airborne particles, contaminated objects, or blood exposure.
- Wash or sanitize hands at appropriate times, including before and after each client contact.
- Clean first, then disinfect reusable surfaces and equipment using the product's labeled contact time.
- Use gloves for anticipated contact with blood, nonintact skin, or body fluids; gloves do not replace hand hygiene.
- Postpone hands-on care for contagious illness, fever, or uncovered infectious lesions according to policy.
- Handle linens and waste safely, and follow local exposure-response procedures.
Key terms
- Pathogen
- A microorganism or agent capable of causing disease.
- Transmission
- Movement of an infectious agent between sources and hosts.
- Standard precautions
- Routine measures used to reduce exposure to infectious material.
- Disinfection
- Use of a process or product to inactivate many pathogens on surfaces.
- Portal of entry
- A route through which an agent enters a host.
Memory tip
Clean, then disinfect; protect hands, then wash them.
Clinical note
Never massage over suspected contagious skin conditions. Follow workplace and public-health guidance for exposure, cleaning, and postponement.
Unit checkpoint
Lock it in: match the terms, then test yourself.