1. Human diseases: human cholera (Vibrio cholerae), dysentery (Bacillus dysenteti), tuberculosis (Mycobacterium tuberculosis), typhoid (Salmonella typhosa), whooping cough (Bordetalla pertussis), pneumonia (Diplococcus pneumoniae), diphtheria (Corynebacterium diptheriae), syphilis (Treponema pallidum). , gonorrhea (Neisseria gonorrhoeae), meningitis (Neisseria meningitidis), plague (Yersinia pestis), tetanus (Clostridium tetani), leprosy (Mycobacterium leprae), anthrax, undulated fever etc. are caused by bacteria.
2. Human Sexually Transmitted Diseases (STD): Diseases that are spread from one person to another through sexual intercourse are called Sexually Transmitted Diseases-STD. Sexually transmitted diseases are gonorrhea and syphilis.
(i) Gonorrhea: Gonorrhea is caused by Neisseria gonorrhoeae bacteria. The disease spreads through sexual intercourse between men and women. This disease is transmitted from one body to another by vaginal, oral and anal sex. The disease is spread through sexual contact. The disease is spread through the blood, wounds or kisses of an infected person. Children can get sick from infected bedding, sheets, clothes etc. Children can get gonorrhea from overcrowding and unsanitary conditions. It can cause infertility in both men and women.
(ii) Syphilis: Syphilis is caused by the bacteria Treponema pallidum. The disease spreads through sexual intercourse between men and women. This disease is transmitted from one body to another by vaginal, oral and anal sex. The disease is spread through the blood, wounds or kisses of an infected person. Syphilis can be spread by sharing the patient’s toilet, bathtub, clothing, food, and swimming pool. Children of infected mothers get syphilis. Symptoms appear within 21 days. However, individuals may develop symptoms within 10-90 days.
3. Livestock diseases: Bovine tuberculosis (Mycobacterium bovis), undulated fever, sheep anthrax (Bacillus anthracis), goat brucellosis (Brucella suis), rat plague (Yersinia pestis), poultry cholera (Bacillus avisepticus) etc. are caused by bacteria. The bacterium causes rot in cattle, downy mildew in poultry, and disease in horses, donkeys, sheep, and goats.
4. Plant diseases: Tundu disease of wheat (Agrobacterium tritici), blight of rice (Xanthomonas oryzae), gum disease of sugarcane (Xanthomonas vasculorum), canker disease of tomato (Corynebacterium michiganese), crown gall of tomato and rose (Agrobacterium tumefaciens), canker disease of lemon (Xanthomonas citri). , potato scab disease (Steptomyces scabies), apple fire blight (Erwinia amylovora), oat stem rot and potato soft rot (Erwinia carotovora), tobacco blight (Pseudomonas tabacci), cotton leaf spot disease (Xanthomonas mavacearum), bean leaf spot ( Diseases caused by bacteria such as Xanthomonus malvacearum). It greatly reduces the yield of crops.
5. Soil Fertility Reduction / Denitrification: Thiobacillus, Bacillus denitrificans and Microbacillus bacteria break down nitrates in the soil to release nitrogen in the process of denitrification. It causes lack of plant nutrients in the soil. Soil fertility decreases and crop production decreases.
6. Food spoilage and poisoning: Bacteria such as Clostridium botulinum, Staphylococcus, Pseudomonas, Acinetobacter, Bacillus etc. spoil vegetables, fruits, fish, meat, dairy products and other food products. Clostridium botulinum bacteria produces a toxin called botulinum in food. Botulinum toxin causes botulism in humans. It can kill people.
7. Water pollution: The bacteria that cause cholera, dysentery and typhoid cause water pollution through the feces of patients. Bacteria like E. coli, Salmonella, Vibrio etc. pollute water.
8. Bioterrorism: In the modern era, bacteria may have the potential to be used in harmful microbial warfare. This is called bioterrorism. It is a threat to mankind.
9. Accidents in vehicles: Clostridium growth in aviation fuel can cause serious accidents.
10. Damage to household items: Spirochete cytophaga bacteria causes damage to household fabrics, leather goods and furniture. Desulfovibrio causes lesions in iron pipes and disrupts water supply.
11. Desulfurization: Desulfovibrio bacteria break down sulfate salts in the soil to release hydrogen sulfide gas in the desulfurization process. It causes great loss in plant nutrition.
12. Vehicle accidents: Clostridium bacteria grows in airplane fuel. It can cause a plane crash.