Free Essay: Influenza (flu) is an infectious respiratory illness caused by influenza viruses. There are two primary types of influenza viruses: type A and B...
Influenza, commonly referred to as the" flu," is an acute, contagious respiratory infection. The first of the human respiratory viruses to be isolated and characterized, influenza viruses have been studied the most extensively and are the best understood. The term itself,"WP Glezen...
Influenza B almost exclusively infects humans and is less common than influenza A. Flu type B also mutates about two to three times more slowly than influenza A. Because humans are the natural host of influenza B, pandemics generally do not occur with influenza B viruses.22 Although scientists...
Swine flu, also known as 2009 H1N1 type A influenza, is a human disease. People get the disease from other people, not from pigs. The disease originally was nicknamed swine flu because the virus that causes the disease originally jumped to humans from the live pigs in which it evolved. Th...
1.解析:根据文章第一段“What is bird flu?It’s a form of influenza believed to strike all birds. Though poultry(家禽) are believed to be especially prone to(倾向于)humans”就可推出bird flu不但可以感染禽类也可以传染人。 答案:B 2.解析:根据文章第二段第一句话“Thailand, Vietnam, Indonesia...
(a) What is Swine influenza? (b) What are its symptoms? (c) How can it be prevented? What is the Flu?: The flu, also known as the influenza, is a contagious respiratory illness, primarily caused by influenza A and B viruses. It is a seasonal virus. Answer ...
Influenza viruses cause influenza (also called the 'flu') which is a contagious respiratory illness. The two main types of influenza viruses are Type A and Type B. These viruses spread annual in humans during flu season. Influenza vaccines are important in helping prevent infection....
Get the influenza (flu) vaccine as soon as recommended each year.The flu vaccine is available starting in September or October. Flu viruses change, so it is important to get a flu vaccine every year. Get a COVID-19 vaccine as directed.At least 1 dose of an updated vaccine is recommended...
What is flu and what’s it to you? Influenza, flu for short, is a serious and contagious respiratory illness caused by the influenza virus. Flu mainly spreads via tiny droplets made through coughing, sneezing, or talking. These droplets can travel about six feet and can land in the mouths...
Prime–boost vaccination with a fowlpox vector and an inactivated avian influenza vaccine is highly immunogenic in Pekin ducks challenged with Asian H5N1 HPAI The efficacy of different vaccination schedules was evaluated in 17-day-old Pekin ducks using an experimental inactivated whole virus vaccine ...