Summary of characteristics of bacteria-table

Bacteria Morphology Culture
characteristics
Hemophilus
Influenzae
(H.Influenzae)
Gram negative
Enteric fever
Salmonella
Gram negative
Shape:
coccobacillus
Size: 1 Microns
x 0.3 Microns
Arrangement:
clusters
Shape: rodshape
Size: 1 to 3
Microns x 0.5
Microns
Motile
capsulated
Non sporulating
T: 37 c
Ph: 7.3
O 2: aerobic
T: 15 c to 40 c
Ph: 6 to 8
O 2: aerobes and
facultative
anaerobes
Media:
-Selenite F
-Tetrathionate
broth
-Enrichment
media
Biochemical
reactions
Glucose xylose
one fermented
with acid
production
Oxidase and
catalase positive
Ferment
glucose, maltose
MR and citrate
positive
Antigenic
structure
Capsule outer
membrane
protein and
lipopolysacchari
des
Act as antigen
Flagellar H,
Somatic O
And
surface vi
antigen
Toxins
___
Pathogenesis/
spectrum of
disease
Infections:
-Meningitis
-Epiglottitis
-Pneumonia
-Bronchitis
-Suppurative
lesions
-Enteric fever
-Septicemia
-Gastroenteritis
-food poisoning
Other if only
mentioned in the
syllabus