Compared with most other viral respiratory infections, such as the common cold, influenza (flu) infection usually causes a more severe illness with a mortality rate (death rate) of about 0.1% of people infected with the virus. Cold symptoms (for example, sore throat, runny nose, cough (with...
CDC, Centres for Disease Control
talk or sneeze.The flu may also be transferred when people touch a surface or an object that has the flu virus on it and then touch their nose, mouth, or eyes.
Learn about influenza (flu) symptoms, treatment with antiviral drugs, flu shot side effects, and prevention during flu season. Discover when to get the flu vaccine, how long the flu lasts, the contagious period, flu types, and how it spreads.
Flu (influenza)Medically reviewed by Drugs.com. Last updated on Apr 2, 2025.Summary Symptoms Diagnosis Prevention Treatment Prognosis What is the Flu (influenza)?Influenza (the flu) is a respiratory infection. It is caused by the influenza virus. Influenza typically is spread by air or by ...
以及“researchers announced they’d discovered why the 1918 flu was so deadly”可概括出文章主要介绍1918年的流感如此的致命的原因,故选A。【小题2】细节理解题。根据倒数第二段“why the 1918 flu was so deadly. The flu virus inflamed the lungs, causing them to fill with liquid”流感病毒使肺恶化...
In addition, some people may not develop symptoms but still spread the virus to others (i.e. asymptomatic spread), according to the CDC. Flu symptoms People often confuse the symptoms of flu with those of the common cold. While it sometimes can be hard to tell the difference between a ...
that line the inside of your nose, throat, or lungs in search of a hospitable place to replicate, while others keep the virus strong and intact. Once the virus attaches to cells lining your respiratory tract, they cause theinflammationand irritation that lead to the host of flu symptoms. ...
flu. People were ordered to wear masks. Schools, theaters and other public places were closed. When the first wave(波>in the spring of 1918 hit, it didnnt seem serious. People who were infected felt the usual flu symptoms(症状), which are chills, fevers, and feeling tired. Those who ...
What type of virus causes influenza? What is the difference between influenza epidemics and influenza pandemics? News• COVID-19 leaves longer-lasting symptoms than flu or pneumonia, study finds•May 2, 2025, 2:58 AM ET (News-Medical) ...