1、Content1What Is the Flu?2Flu Symptoms3How Flu Works?4Types of Flu5PreventionWhat Is the Flu?First definitionFlu is also called the influenza.Its an infection that causes a fever,chills,cough,bodyaches,headaches,and sometimes earaches or sinus problems.What Is the Flu?Second definitionThe flu is a re
2、spiratory illness caused by the influenza virus.The flu is not the same as a cold,although they share many of the same symptoms.The cold is caused by a different virus,and it tends to have milder symptoms than the flu.Colds are also less likely to cause serious plications.Flu Symptoms1、Cough2、Sore t
3、hroat(喉咙痛)3、Headaches4、Muscle or body aches5、Fever or feeling feverish/chills（发烧或感觉发热/寒战）6、Runny or stuffy nose（流鼻涕、鼻塞）7、Fatigue(tiredness)8、Some people may have vomiting and diarrheaFlu SymptomsThe flu also weakens the immune system,leaving it vulnerable to more serious infections.High-risk individ
4、uals in particular are susceptible to serious plications.such as:Bacterial pneumonia(细菌性肺炎)Dehydration(脱水)Sinus problems and ear infections(primarily in children)窦问题和耳部感染（主要是儿童）Worsening of preexisting conditions,such as asthma or diabetes（哮喘或糖尿病）How Flu Works1.The virus enters the respiratory tract
5、.（呼吸道）2.After entering the respiratory tract,the virus starts to replicate itself.The respiratory tract bees swollen and inflamed.3.Once inside the respiratory system,the virus enters the bloodstream.the first symptoms(cough)begin to show.Flu and the mon ColdThe flu and the mon cold have similar sym
6、ptoms.It can be difficult to tell the difference between them.In general,the flu is worse than the common cold,the flu tends to be more severe and usually comes on suddenly,at times it can lead to death.Learning whether it is a cold or flu is important because the flu can have serious complications
7、such as pneumonia（急性肺炎）or even death.Treating flu within 48 hours of symptoms is best.Prescription antiviral drugs may cut the time youre sick.Types of FluThere are three types of flu viruses:A,B,and C.Influenza A can infect a range of mammals and birds as well as humans,while types B and C infect m
8、ainly humans.H1N1 Influenza(Swine Flu)H1N1 influenza is a type of influenza A.It is known as swine flu because it primarily infects pigs.Transmission to humans is unmon,but it can occur if humans come into contact with infected pigs or with environments contaminated by the virus.An infected human ca
9、n then spread the disease to other humans.Although it also circulates in pigs,you cannot get it by eating properly handled and cooked pork or pork products.The best way to prevent the H1N1 flu is to get the seasonal flu vaccine.You should also follow our advise to keep yourself healthy during flu se
10、ason.H1N1 Influenza(Swine Flu)H5N1 Bird FluThe avian influenza virus,or bird flu,occurs naturally in wild birds,but does not make them sick.Because the virus is very contagious among birds,avian influenza virus can be deadly if transmitted to domesticated birds.Human infections are caused by transmi
11、ssion of the Influenza A virus from infected birds to humans.H5N1 Bird FluAlthough H5N1 does not usually infect humans,nearly 650 cases of human cases of H5N1 have been reported from 15 countries since 2003.Fever and coughAcute respiratory distressShortness of breath/difficulty breathingAbdominal pa
12、inDiarrheaSymptomsHow can we prevent highly pathogenic H5N1 virus infection?The best way to prevent infection is to avoid any contact with sick or dead poultry.This includes avoiding visiting live poultry markets that may be infected with H5N1 when traveling.Also avoid sick people who might have H5N
13、1 virus infection in affected countries.H7N9 is a new type of bird flu,avian flu discovered in Shanghai and anhui first at the end of march in 2013.Fighting Against H7N9 Bird Flu we had successfully developed the vaccine for the H7N9 bird flu virus,after the flu strain had left more than 130 people
14、infected,with 45 fatalities reported.Vaccination is the best way to protect yourself from the flu.There are additional steps you can take to keep yourself and your family healthy this flu season.PreventionVACCINATED Everyone 6 months of age and older should get vaccinated against the flu.TAKE PRECAU
15、TIONSTake everyday precautions,like washing your hands,to protect your health.ANTIVIRAL MEDICATIONSIf you are exposed to or caring for someone with the flu,talk to your doctor about preventive antiviral medications.PreventionThere are steps you can take in your daily life to help protect you from ge
16、tting the flu.1.Wash your hands often with soap and water or an alcohol-based hand rub.2.Avoid touching your eyes,nose,or mouth.Germs spread this way.3.Try to avoid close contact with sick people.Prevention5.Practice good health habits.Get plenty of sleep and exercise,manage your stress,drink plenty of fluids,and eat healthy food.4.Cover your nose and mouth with a tissue when you cough or sneeze.Throw the tissue in the trash after you use it.Prevention
