What You Need to Know About Infectious Disease (2011) / Chapter Skim
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I How Infection Works
I How Infection Works
Pages 4-10
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In fact, our bodies contain at least 10 times more bacterial cells than human Experts believe about half ones, blurring the line between where microbes of all human DNA originated from end and humans begin. Microbes in the human viruses that infected and embedded gastrointestinal tract alone comprise at least 10 trillion organisms, representing more than 1,000 species, their nucleic acid in our ancestors' which are thought to prevent the gut from being egg and sperm cells.
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This An electron micrograph of an infected cells or simply bud off a cell process operates far more efficiently in the microbial influenza virus particle, showing membrane. This lack of self-sufficiency world than in people.
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They have evolved many different Sometimes they carry accessory small rings of DNA, behaviors over a wide range of habitats, learning to known as plasmids, that encode for specialized adhere to cells, make paralyzing poisons and other functions like antibiotic resistance. Unlike more toxins, evade or suppress our bodies' defenses, and complex forms of life, bacteria carry only one set resist drugs and the immune system's antibodies.
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International commerce, hot springs, deep ocean thermal vents, and Antarctic especially in foodstuffs, adds to the global traffic ice. Indeed microbes, by sheer mass, are the earth's most abundant life form and are highly adaptable to external forces.
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Diseases infected person touches a surface such as a doorknob, spread by airborne transmission include measles countertop, or faucet handle, leaving behind and hantavirus pulmonary syndrome. microbes that are then transferred to another person 8
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Pathogenic microbes challenge the immune system Disease, which typically happens in a small in many ways. Viruses make us sick by killing proportion of infected people, occurs when the cells cells or disrupting cell function.
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These cells infect red blood cells and then rapidly Sometimes they kill cells and tissues outright. reproduce, destroying the red blood cell hosts Sometimes they make toxins that can paralyze, destroy and releasing many new merozoites to do further cells' metabolic machinery, or precipitate a massive damage.
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