Nature could not have designed a better breeding ground for viruses than the epithelial-lined cells of the human respiratory tract. Warm, moist, and slippery, they provide a welcome mat for viruses which we inhale or ingest. Flu viruses are so hearty that they can last for up to two weeks on surfaces which we touch. Then by touching our noses, mouths, or eyes, we provide the free shuttle service. Other viruses enter our body via the air which we accommodatingly breathe in. A flu virus can travel as much as three feet and can hang in the air for a long time.
Once the flu virus lands in your body, it gets busy. Although it’s only about one-millionth of an inch long, it has three parts: nucleic acid which is its set of genetic instructions; a protein coat which protects the genetic material; and a lipoid membrane which surrounds the protein coat. The lipoid membrane also helps flu viruses to survive for a long time outside the body.
As perfect as they are, flu viruses need your enzymes in order to carry out the chemical reactions of life, and once they’re in your perfect chemistry lab, they get busy. They attach to a host cell and take over its enzymes and start replicating themselves (more impressive than anything from science fiction). During this process, they often destroy the host cells turning them into slime that drips down your nose and throat. Once the viruses and their accompanying slime reach your stomach, you feel sick. The delicate chemical balance that makes your gut work is overturned and you may vomit or have diarrhea.
The rapidly growing army of viruses spread via your bloodstream to your lungs and muscles. Your nose, throat, and lungs become irritated and mucous flows. You cough, trying to get rid of it. Your muscles ache as flu viruses attack muscle cells. And then your army of immunological defense roars into the picture, giving you a fever by producing pyrogens which heat up your body with fever to kill the viruses. While a fever feels awful, it is actually your body’s immune system trying to heal you. A person incapable of an immune response fever may be much sicker than one without.
If your army isn’t as strong as their army, you may develop a secondary bacterial infection in your lungs or sinuses pneumonia, sinus infection, ear infection talk about not feeling good. You hurt all over, you’re feverish, and you’re so tired you can barely move. Should you be foolish enough to keep on trying to work as you normally do,
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