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🟥 Shigella spp general characteristics :
1/ Gram negative bacilli ( Enterobacteriaceae)
2/ facultative anaerobe
3/ Non motile
4/ non lactose fermenter ( S. sonnei late lactose fermenter)
5/spp: S.dysenteriae,S.flexneri, S.boydii and S. Sonnei
6/cause bacilliary dysentery
7/ produce Shiga toxins, enterotoxins, IPA and type three secretion system
8/ low infectious dose (10_100)
9/on Makconkey produce colorless colonies
10/ on XLD... Red colonies without black color
11/on SSA... No black color
12/ Catalase positive and oxidase negative
13/on KIA.. No gas no H2s
14/ urease negative, citrate negative and indole negative (some strains positive)
15/MR positive, VP negative

#generalcharacteristicsinbacteria
#in15points

🟥 Shigella spp general characteristics :
1/ Gram negative bacilli ( Enterobacteriaceae)
2/ facultative anaerobe
3/ Non motile
4/ non lactose fermenter ( S. sonnei late lactose fermenter)
5/spp: S.dysenteriae,S.flexneri, S.boydii and S. Sonnei
6/cause bacilliary dysentery
7/ produce Shiga toxins, enterotoxins, IPA and type three secretion system
8/ low infectious dose (10_100)
9/on Makconkey produce colorless colonies
10/ on XLD... Red colonies without black color
11/on SSA... No black color
12/ Catalase positive and oxidase negative
13/on KIA.. No gas no H2s
14/ urease negative, citrate negative and indole negative (some strains positive)
15/MR positive, VP negative

#generalcharacteristicsinbacteria
#in15points


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