预防流感PPT 幻灯片.ppt

预防流感PPT_幻灯片Speaker: Chen jiaMaker: Xue bei Zhao yanling Wang Xiqi
Content
1
What Is the Flu?
2
Flu Symptoms
3
How Flu Works?
4
Types of Flu
5
Prevention
What Is the Flu?
First definition
Flu is also called the influenza. It's an infection that causes a fever, chills, cough, bodyaches, headaches, and sometimes earaches or sinus problems.
What Is the Flu?
Second definition
The flu is a respiratory 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 plications.
Flu Symptoms
1、Cough
2、Sore throat(喉咙痛)
3、Headaches
4、Muscle or body aches
5、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 diarrhea
How Flu Works
virus enters the respiratory tract.(呼吸道)
entering the respiratory tract , the virus starts to replicate itself. The respiratory tract es swollen and inflamed.
3. Once inside the respiratory system , the virus enters the bloodstream . the first symptoms(cough) begin to show.
Flu and mon Cold
The flu and mon cold have similar symptoms. It can be difficult to tell the difference between them.
In general, the flu is worse than mon cold, the flu tends to be more severe and es on suddenly, at times it can lead to death.
Learning whether it is a cold or flu is important because the flu can have plications 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 you're sick.
Types of Flu
There 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 mainly 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 t