causes of bacterial disease and viral disease
Answers
Explanation:
Bacteria and viruses can cause many common infections. But what are the differences between these two kinds of infectious organisms?
Bacteria are tiny microorganisms that are made up of a single cell. They are very diverse, and can have a large variety of shapes and structural features. Bacteria can live in almost every conceivable environment, including in or on the human body.
Only a handful of bacteria cause infections in humans. These bacteria are referred to as pathogenic bacteria.
Viruses are another type of tiny microorganism, although they’re even smaller than bacteria. Like bacteria, they’re very diverse, and have a variety of shapes and features.
Viruses are parasitic. That means they require living cells or tissue in which to grow. Viruses can invade the cells of your body, using the components of your cells to grow and multiply. Some viruses even kill host cells as part of their life cycle.
Read on to learn more about the differences between these two types of infections.
How are bacterial infections spread?
Many bacterial infections are contagious, meaning that they can be spread from person to person. There are many ways this can occur, including:
close contact with a person who has a bacterial infection, including touching and kissing.
contact with the body fluids of an infected person, particularly after sexual contact, or when an infected person coughs or sneezes
transmission from mother to child during pregnancy or birth
coming into contact with contaminated surfaces, such as doorknobs or faucet handles, and then touching your face, nose, or mouth
In addition to spreading from person to person, bacterial infections can also be spread through the bite of an infected insect. Additionally, consuming contaminated food or water can also lead to infection.
Like bacterial infections, many viral infections are also contagious. They can be spread from person to person in many of the same ways, including:
coming into close contact with a person who has a viral infection
contact with the body fluids of a person with a viral infection
transmission from mother to child during pregnancy or birth
coming into contact with contaminated surfaces
Also, similarly to bacterial infections, viral infections can be spread by the bite of an infected insect or through consuming food or water that has been contaminated.
For bacteria and virus they must colonise first in the body of patient ,they invade and then they multiply .if the host earlier wasn't treated by any vaccination then it would be harder for his immune system to fight against the disease.
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