People can’t spread the virus until they start to have symptoms, such as coughing and sneezing.
Cold virus usually gets to the body via nose. They moved in, take over the cells lining of the nostril, and begin reproducing.
When the body nerves detect a virus, they contact the lungs and get them to send a blast to air through the body.
When the infected person coughs or sneezes, he or she release tiny droplets of water from the mouth and nose.
These droplets are loaded with the flu virus. The tiny water packages carry the virus through the air and can travel several feet away from the person who sneezed or coughed.
They spew out millions of viruses that float on tiny mucous droplets.
If the virus-containing droplets lands on someone’s mouth or nose, that person may also get sick.
Therefore if the person feels sick, cover nose and mouth with disposable tissues when cough or sneeze and wash the hands after coughing or sneezing.
The flu virus’s ability to turn normal human or animal host cells into flu-copying machines is another reason influenza can take over immune system.
Adults are generally contagious for about six days, from the day before the onset of symptoms to about five days after they get sick.
Sneezing
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