What causes a cold?A cold is caused by a virus. Many viruses can cause a cold, and each is contagious. A virus may be spread to others through coughing, sneezing, or close contact. A virus can also stay on objects and surfaces. You can become infected if you touch the object or ...
When it comes to human-to-human transmission (传播,名词) of the viruses, often it happens when someone comes into contact with an infected person's secretions (分泌物), such as droplets (小水滴,飞沫) in a cough.Depending on how virulent the virus is, a cough, sneeze or handshake could ...
to exercise for at least 30minutes a day.It's also important to go to bed and get up early.Studies show that the cold or flu virus(流感病毒) can live on our hands for a long time.So you should wash your hands with soap.Finally,it's important to have a ...
A cough coupled with body aches could be a sign of a more serious illness. The flu, caused by the influenza virus, can have symptoms similar to those of a cold. But you’ll usually feel a lot worse when you have the flu. You could have: Fever Chills Muscle aches Serious tiredness T...
The viruses are common and usually cause mild infections, such as a cold. MERS may lead to severe, life-threatening problems. The virus damages the air sacs of the lungs, and they become inflamed and scarred. The damaged air sacs do not allow oxygen to get into your bloodstream, leading ...
The viruses can be transmitted from animals to humans; the virus that causes SARS, for example, was originally transmitted to humans from a cat-like animal called a civet. But in some instances, as with this outbreak, they can also be transmitted from one infected person to another....
Find out what cold sores are and learn cold sore facts, symptoms and causes with this guide from Abreva. Treat cold sores quickly with Abreva Cold Sore Cream.
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Do you know what causes a cold, how it is spread or how to help prevent it? And which of the many medicines is best for your cold?There is no known cure for the common cold. Once you catch a cold, your body usually produces antibodies(抗体) to the virus which caused the cold. ...
In the case of a cold, the immune system opens up blood vessels through inflammation and also increases mucus secretions. These two processes give you the runny nose and the stuffy feeling. The irritation caused by the virus and all of the fluid causes sneezing. If the virus makes it into...