Staphylococcus and Streptococcus are both Gram positive organisms and cocci in shape. They are Non-motile, Non-Sporing and Facultative anaerobes. But they possess some of the differences which are as follows:
|1||Arrangement||Grape-like clusters.||A chain of round cells.|
|2||Division||Staphylococci divide in various directions (multiple axes).||Division occurs in one linear direction (single axis).|
|3||Catalase Test||Positive (Catalase is an enzyme to converts hydrogen peroxide to water and oxygen gas).||Negative|
|4||Enriched Media||Staph does not need enriched media (not fastidious).||Strep needs enriched media (fastidious).|
|5||Habitat||Staphylococci are found on the skin.||Streptococci are found in the respiratory tract.|
|6||Hemolysis||No hemolysis or beta hemolysis.||Either alpha, or beta or gamma hemolysis.|
|7||Species Number||About 40 staphylococcal species have been identified so far.||About 50 Streptococcal species have been identified so far.|
|8||Pathogenesis||Most of the staphylococcal species are non-pathogens.||Streptococcus cause many diseases.|
|9||Common Diseases||Food poisoning, bacterial conjunctivitis, skin diseases, community-acquired meningitis, Surgical Site Infection, Wound infection, impetigo, cellulitis, and toxic shock syndrome.||Strep throat, Scarlet fever, Impetigo, Toxic shock syndrome,
Cellulitis and necrotizing fasciitis (flesh-eating disease), sinusitis, blood infections, pneumonia and meningitis in newborns.
|10||Pathogenic Species||Staphylococcus aureus,
Staphylococcus saprophyticus, etc.
Streptococcus pneumoniae, etc.
|– Coagulase test
– Novobiocin sensitivity test
– Biochemical tests
|– Type of hemolysis
– Cell wall carbohydrate group (A, B, C, etc)
– Bile Solubility Test
– CAMPT Test
– Optochin Sensitivity Test