Influenza A Influenza A is a highly contagious virus, which can cause dramatic illness, periodic pandemics and outbreaks globally every year. The major source of these onsets per annum is the emergence of an antigenically novel virus which the human population lack protective immunity against. Meanwhile, animals are a source of panzootics which largely contribute to influenza pandemics.
Typically, when someone is infected with influenza they experience fever usually o to oF in adults, but even higher in children and causes a cough, sore throat, runny or stuffy nose, and also headaches, muscle aches, and usually extreme tiredness. There are sometimes other symptoms such as nausea, vomiting and diarrhea but usually only in rare cases with young children.
The term "Stomach flu" isn't really caused by the influenza virus. The average recovery time from the flu is about weeks, although some patients do develop more severe complications such as pneumonia, which are capable of being life threatening.
On average, influenza is associated with more than 20, deaths nationwide and more thanhospitalizations.
These are usually from patients who develop complications and they are usually children or the elderly, although complications can develop at any age. There are three types of influenza viruses, Groups A, B, and C. Only Groups A and B are responsible for causing the epidemics of flu that occur almost every year.
Influenza C is different in several ways because it causes mild to no symptoms and doesn't cause the yearly epidemics. Scientists put out most of their effort to control influenza A and B because of their huge impact on the nation and the world.
Influenza type A viruses have two proteins that determine their specific type. Influenza A viruses are very hard to control because they undergo changes, making it harder for human's immune systems to detect them.
There are two types of changes. The first is a series of mutations that occur over time and cause a gradual change in the virus. This is called antigenic "drift. Antigenic shift occurs only occasionally, but when it does large numbers of people or even entire populations have no antibody against the virus.
Although this is potentially lethal, the virus can only start a pandemic if it is able to be spread easily. Throughout the 20th century there were three pandemics, one inone inand one in Each of which resulted in large numbers of deaths.
The pandemic was known as the "Spanish Flu" and was Influenza strain A H1N1 and it caused the highest known influenza death rate known,Americans and 20 million people worldwide. When this virus first emerged it had the lowest mortality rate in the 20th century.
Although this virus first emerged with such a small death rate, it still continues to kill people to this day. Now, to answer a few common questions about influenza.
If I am exposed to a person with Influenza and become infected, how soon will I get sick? Also, how long is a person contagious with Influenza? The time between infection and appearance of symptoms incubation period for influenza can range between 1 and 4 days.
A person with influenza can be contagious 1 day before symptoms appear and for 3 to 7 days after onset of symptoms.It is the mission of the Board of Education to promote a highly effective partnership between our school staff, parents/guardians, and community members to ensure our students a strong academic, social, and career foundation while establishing high standards of excellence and achievement.
INFLUENZA Essay Words | 4 Pages. INFLUENZA A virus called an Orthomyxovirus causes influenza. Often called flu, sometimes-even grippe.
It is a very contagious disease, and it infects many parts of our bodies. This also includes are lungs.
A person can get influenza if someone coughs, sneezes, or even talks around you while they are infected. Sr.
Editor, Mulher, 29 anos, previamente hígida, procurou o serviço de emergência com queixa de dispneia súbita. No exame físico o murmúrio vesicular estava abolido em todo o hemitórax direito. Feb 02, · Words: Length: 4 Pages Document Type: Essay Paper #: H1N1 I chose this topic because the H1N1 virus and the swine flu have taken over the news.
The Ohio Department of Health is heavily committed in getting the word out. H1N1 disease is also referred to as the swine flu. It is a new kind of influenza which has been causing illness in the society and was first detected in the year in the United States.
It spreads from one individual to another just the way the regular seasonal influenza viruses spread. Index of comprehensive articles on medical diseases and conditions. Covers all aspects of medicine produced by doctors.