the following information is not yet verified
General information
In the past, its effects have often been attributed wrongly to Shewanella putrefaciens.
There has been a rising number of disease cases attributed to S. algae in the last decade, thanks to correct classification

Taxonomy
Family: Shewanellaceae / Formerly: Pseudomonas

Natural habitat
In the environment and in food products, does not belong to the normal flora of the human being.
- S. algae occurs in the vicinity of salt water
- S. putrefaciens isolated from fish, chicken, meat, fresh and saltwater.

Clinical significance
Clinical significance unknown.
Shewanella algae is of interest because of its potential to be a serious human pathogen.
It is known to cause peritonitis and obstructive pneumonia, ear infections, bacteraemia, rare occurrences of skin and soft tissue infections, bone and joint infections, and many others.

S. algae is most commonly isolated in humans

> 80% (Note errors) and is considered to be more virulent than S. putrefaciens

the following information is not yet verified
Long, short or filamentous Gram-negative rods.

Obligate Aerobic / halophilic

BA: convex, smooth and sometimes mucoid colonies with yellow / brown-brown pigment and give a green discoloration of the bloodagar.

- S. algae is always hemolytic (after 48-72 hours), it can be mucoid
- S. putrefaciens, is usually not- haemolytic

McConkey: growth, non lactose fermenter and may be mucoid

BBAØ: no growth

Warning!!!!!!!!!!!!!
As the two species seem to have different pathogenic potential for humans, correct identification is important

James Versalovic et al.(2011) Manual of Clinical Microbiology 10th Edition