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why does a virus make you sick

Trichinella spiralis, the parasitic worm (helminth) that causes , enters the body encased in cysts residing in undercooked meat. Pepsin and hydrochloric acid in our bodies help free the larvae in the cysts to enter the small intestine, where they molt, mature, and ultimately produce more larvae that pass through the intestinal wall and into the bloodstream.

At that point they are free to reach various organs. Those that reach skeletal muscle cells can survive and form new cysts, thus completing their life cycle. Histoplasma capsulatum, a
that causes, grows in soil contaminated with bird or bat droppings.

Spores of the fungus emerge from disturbed soil and once inhaled into the lungs germinate and transform into budding cells. In its acute phase, the disease causes coughing and flu-like symptoms. Sometimes histoplasmosis affects multiple organ systems and can be fatal unless treated.

Viruses are very simple microbes, they can't do much by themselves. Viruses need a host, another living organism that gives them everything they need to work. Viruses take any chance they can to find a host. They get inside the host's cells and take it over.

Viruses use the host cells machinery to make lots of copies, so many that the cell bursts and infects other cells around it! They can make more viruses very quickly - just one virus can turn into lots of viruses and make you sick! So how do viruses try to take over your body? Click on the link to!

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