Pathogenic bacteria

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Pathogenic Bacteria

Pathogenic bacteria (/pæθəˈdʒɛnɪk bækˈtɪəriə/; from the Greek pathos "suffering, passion" and -genēs "producer of") are bacteria that can cause disease when they infect a host organism. This is in contrast to non-pathogenic bacteria, which are typically harmless or beneficial to their host.

Pathogenic bacteria can be classified into several types based on their mechanisms of pathogenicity, the diseases they cause, and the host organisms they infect. Some of the most well-known types of pathogenic bacteria include Staphylococcus, Streptococcus, and Escherichia coli.

Mechanisms of Pathogenicity

Pathogenic bacteria cause disease through a variety of mechanisms. These include the production of toxins, invasion of host tissues, and evasion of the host's immune system. Some bacteria, known as obligate pathogens, are always pathogenic, while others, known as opportunistic pathogens, only cause disease when the host's defenses are compromised.

Diseases Caused by Pathogenic Bacteria

Pathogenic bacteria are responsible for a wide range of diseases. These include common infections such as pneumonia, urinary tract infections, and foodborne illness, as well as more serious diseases such as tuberculosis, syphilis, and plague.

Treatment and Prevention

Treatment for diseases caused by pathogenic bacteria typically involves the use of antibiotics, which kill or inhibit the growth of bacteria. Prevention strategies include vaccination, good hygiene practices, and the use of antiseptics and disinfectants.

See Also

External links

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