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what is Bacterial Infections and its types

Bacterial Infections
Today we will discuss about such a disease that spread due to bacteria.Bacterial infections is the most dangerous situation occurs when harmful forms of bacteria multiply inside the
body. These infections range from mild to severe. Although they include such
deadly diseases as plague, tuberculosis, and cholera, these and many other bacterial
diseases can be prevented with good sanitation and/or cured by antibiotics.

What Are Bacterial Infections?

Bacteria are microorganisms*, and they exist everywhere: in the air, in water,
and in every animal and person. Bacteria are by far the most numerous
organisms on Earth.
Most bacteria are harmless. Often bacteria are beneficial, even essential,
to plant and animal life. Bacteria decompose (break down) dead
plants and animals. This process allows a chemical element such as
carbon to return to the soil to be used again. In addition, some bacteria
enable plants to get nitrogen from the soil (and some enable plants to use atmospheric nitrogen). Without bacteria, plants could not grow. In the human body, bacteria help keep the digestive tract working
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Bacteria can also cause disease. Like viruses*, bacteria can cause hundreds
of illnesses. Some bacterial infections are common in childhood,
such as strep throat (caused by streptococcus bacteria) and ear infections.
Others cause major diseases, such as tuberculosis*, plague*, syphilis*, and
cholera*. The infection may be localized (limited to a small area), as when
a surgical wound gets infected with a staphylococcus (staf-i-lo-KOK-us)
bacterium. It may involve an internal organ, as in bacterial pneumonia
(infection of the lungs) or bacterial meningitis (infection of the membranes
covering the brain and spinal cord).
Some bacteria, such as Streptococcus pneumoniae, also known as
pneumococcus (noo-mo-KOK-us), almost always cause illness if they
get into the body. Others, such as Escherichia coli, usually referred to
by the short form E. coli, often are present in the body without doing
harm. If the immune system* is weakened, however, these bacteria can
grow out of control and start doing damage. Such illnesses are called
“opportunistic infections.” In the 1990s and early 2000s, they became
more common, in part because AIDS*, organ transplants, and other
medical treatments have left more people living with weakened immune

How Are Bacteria Different?

Unlike other living cells, a bacterium does not have a membrane that
encloses its nucleus, the part of the cell containing DNA, the cell’s genetic
material. Unlike viruses, most bacteria are complete cells that can reproduce
on their own without having to invade a plant or animal cell. Some
bacteria, however, do need to live inside another cell just as viruses do.
How do bacteria spread? Different bacteria spread in different
ways. People get bacteria in the following ways:
■ Through contact with contaminated water (cholera and typhoid
■ Through consumption of contaminated food (botulism, E. coli food
poisoning, salmonella food poisoning)
■ Through sexual contact (syphilis, gonorrhea, chlamydia)
■ Through respiratory droplets expelled into the air, when infected
people sneeze or cough (tuberculosis)
■ Through contact with animals (anthrax, cat scratch disease)
■ Through touching infected people (strep throat)
■ Through skin via tick bites, lice, and cat bites
■ Through open sores on the body
■ Through infections such as Lyme disease, Rocky Mountain spotted
fever, and typhus
■ From one part of the body, where they are harmless, to another
part, where they cause illness (as when E. coli spread from the intestines
to the urinary tract)
■ Because of the after-effects of chronic debilitating conditions such
as alcoholism. The alcoholic who has a diminished cough reflex
inhales foreign material (usually food, liquids, or vomit) from the
mouth into the lungs. Bacteria then enter into the lungs causing
aspiration pneumonia.
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Hello, My Name Is Shahbaz Shahid From Pakistan. I'm a specialist in Internal medicine or general medicine (in Commonwealth nations) is the medical specialty dealing with the prevention, diagnosis, and treatment of adult diseases.if any question so please feel free contact us.

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