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Causative organisms of various diseases

Manika G.
19 Jul 0 0

Streptococcus viridian group

Alpha hemolytic

a). Streptococcus sanguis

• predominantly organisms of plaque in healthy mouth

• subacute bacterial endocarditis 

• another group cause caries after S. Mutans


S. Salivarious

• Form longest chain

• First organism to invade cavity

c) S. Mutans 

Smooth surface caries

Synthetise glucan by its action on dietary carbohydrate

Streptococcus pyogens (beta haemolytic)

pharyngitis, cellulitis, scarlet fever, quinsy, Ludwig's angina

Rheumatic fever

Dental infections most common organism

Streptococcus agalactiae

Neonatal meningitis


Pneumococci or streptococcus pneumonae

Bacterial pneumonae

Meningitis, septicemia


Skin infections 

Furuncle, style, impetigo, carbuncle

Burns and wounds

Osteomyletis and silaadenitis

Toxic shock syndrome

Staphylococcus aureus /pyrogens



cystic fibrosis

Toxic shock syndrome 

ACUTE endocarditis

Food poisoning 



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