Harmful Impacts of Bacteria:

1. Human Disease:

S.N.	Name Bacteria	Disease
1.	Diplococcus pneumoniae	Pneumoniae
2.	Streptococcus phyegens	Sore throat
3.	Staphylococcus aureus	Boils
4.	Vibrio comma	Asiatic cholera
5.	Mycobacterium tuberculosis	Tuberculosis
6.	Corynebacterium diphtheriae	Diphtheria
7.	Salmonella typhosa	Typhoid fever
8.	Haemophilius pertussis	Whooping cough
9.	Bacillus antracis	Anthrax

2. Animal Disease:

Tuberculosis of cattle, anthrax of sheep are caused by Mycobacterium tuberculosis and Bacillus anthracis respectively.

3. Plant Disease:

Citrus canker by Xanthomonas citiriring rot of potato by Corynebacterium sepedonicum.

         Clostridium botulinum produces a very virulent poison (ptomains) in canned foods.

         Loss of fertility: Thiobacillus, Micrococcus, Bacillus denitrificance, etc reduce the nitrates into free Nitrogen.

         Spirocheta cytophoga destroys cotton and articles made from it.