🦠 Microbe of the Week
Image credit: NIAID / Wikimedia Commons, Public Domain
Staphylococcus Aureus
Type: Bacterium
Description: Staphylococcus aureus is a common bacterium that can cause various infections in humans and animals.
Natural Habitat
- Skin → especially moist areas (armpits, groin, perineum)
- Nasal passages → anterior nares (inside the nose) are the most frequent reservoir
- Throat and oral cavity → less common but possible colonization site
- Perineal and gastrointestinal tract → some carriers have it in the gut
Fun Fact: In the environment, S. aureus can persist on surfaces, clothing, and medical equipment for days to weeks because of its resilience.
Key Point: Staphylococcus aureus is usually harmless as part of the normal flora, but it can become dangerous if it enters the body through cuts, wounds, or medical devices.
- Usually harmless → when it just lives on your skin or nose
- Potentially harmful → if it enters the body through cuts, wounds, or medical devices
How to Avoid Staphylococcus aureus Infections
- Good hand hygiene → wash hands regularly with soap and water or use sanitizer
- Keep wounds clean and covered
- Avoid sharing personal items → towels, razors, clothing, gym equipment
- Clean surfaces regularly → especially in kitchens, bathrooms, hospitals
- Cook food properly → prevent toxin formation from contaminated food
- Be careful in healthcare settings → follow infection control guidelines