Taxonomy
Family: Bacillaceae
Genus: Priestia megaterium
Formely: Bacillus megaterium

Natural habitats
Spores occur in soil, dust, water and plants.

Clinical significance
Bacillus megaterium generally non-pathogenic, it can occasionally be associated with opportunistic infections, particularly in immunocompromised individuals.
Clinical significance includes:
Infections:
- Rarely, B. megaterium can cause infections such as wound infections, bacteremia, and endocarditis.
- Contamination: It is also a potential contaminant in clinical specimens due to its environmental presence.
Infections are typically treated with antibiotics, but the organism is often susceptible to a wide range of antimicrobial agents.