What Are The Three Types Of Influenz Influenza

Influenza is very contagious and spreads rapidly from person to person. Influenza causes worldwide yearly epidemics. According to World Health organization Influenza affects 5-15% world’s population and resulting in 500,000 deaths yearly. Ottenberg stated that, in United States, an average of 200,000 were hospitalized and 36,000 died each year from influenza complications. Influenza is the sixth leading cause of death among US adults and is related to 1 in 20 death in persons older than 65 years. Disease control and prevention estimates indicate that infections like H1N1 which is one of the types of influenza, have resulted in an estimated 42 to 86 million cases and 8520 to 17620 deaths. As I mentioned earlier that infections like

Influenza, also known as the flu, is a contagious respiratory illness caused by the influenza virus that infects the nose, throat, and lungs (Centers for Disease Control and Prevention,

There are there types of influenza A and C or the most severe types and B which is the most common, Luckily not the to severe. The virus works by first attaching to the outside of a host cell. It injects its RNA into the cell. Unfortunately our cells treat the RNA like they should. It translates the viral genes using the cell’s ribosomes and enzymes. Now the virus can take the cell over and use it to reproduce more viruses. Sooner or later it releases the new nauseating viruses and they search for another cell to raid.

Influenza is a highly contagious flu that is a viral infectious virus of the respiratory organ. Orthomyxoviridae is the scientific name of the Influenza virus. Some examples of the influenza virus are Influenza A, Influenzavirus B, Influenzavirus C, Bourbon virus, and Isa Virus. The types of flu A, B, and C are responsible for nearly all the Influenza disease that occurs almost every winter. Infection with type C influenza usually causes either a very mild respiratory illness or no symptoms at all. Infection with type C Influenza are usually caused by either a very mild respiratory illness, or there would be no symptoms at all. The most common host for Influenza is any ages in any lifetime. The symptoms of Influenza are fever, cough, and

Influenza is a droplet infection caused by the virus orthomyxoviridae (1). A virus is a microscopic parasite which is usually much smaller than bacteria and viruses can also make you sick (2)(3). Their cell structure is not organized and do not contain a nucleus. Also most viruses are coated in a protein called CAPSID (4). Influenza reproduces through viral cell replication. This means that the virus will attach onto a host cell and inject its genetic material into it then it now is infected with the virus and this continues throughout all the cells (5). Unlike Bacteria viruses don’t rely on water or food because they do not need to respire. The main condition that they completely rely on is a host cell because without a host cell the virus

Don’t you always wonder what the flu really is? Yeah, you go to the doctor and they say you have it, but they don’t really explain it. The flu also known as Influenza is an infectious disease caused by an influenza virus. There are three types of the flu, there is Type A,B, and C. Type C is the least severe and Type A is deadly. The flu always has a yearly outbreak and has about 250,000 to 500,000 deaths.

Influenza A is the worst of the three kinds. According to source 1, flu type A can infect animals, though it is more common among humans. Wild birds are common hosts. Influenza A2 is spread by people who are already infected. It can be spread by sneezing and coughing. Influenza A is the type of flu you get a shot for. It can cause epidemics and pandemics. This is important because we need to know why doctors

Two different proteins on the surface of influenza A, haemagglutinin (HA) and neuraminidase (NA), act as antigens triggering the human antibody response, and it is small mutations in these proteins (antigenic drift) which are the cause of large outbreaks and epidemics. However, there is also the potential for a recombination of variant forms of HA and NA proteins leading to completely new viral subtypes and it is this sudden ‘antigenic shift’ which has the potential to cause a pandemic (Hawker et al., 2012; Potter, 2001).

Influenza A viruses, which have been isolated from a wide variety of avian and mammalian species, including pigs, horses, mink, wild birds and humans are the common pathogens with high variability that cause acute respiratory disease (Lin et al., 2007). They are responsible for both seasonal influenza outbreaks and occasional pandemics affecting millions of people worldwide. Besides, they are divided into two groups, highly pathogenic avian influenza (HPAI) and low pathogenic avian influenza (LPAI). Mortality of HPAI may be as high as 100% whereas LPAI causing milder symptoms (Metreveli, 2006). Furthermore, they are classified into subtypes based on the antigenic differences of the surface glycoproteins, hemagglutinin (HA) and neuraminidase

Avian influenza is a severe, often fatal flu virus of birds, especially poultry, that is transmissible from them to humans. Avian influenza A viruses are continuously detected in wild birds. From time to time, outbreaks of the influenza in poultry have occurred all around the world, causing illness and death in humans in Asia, Africa, Europe, the Pacific, and the Near East. On rare occasions, some avian influenza A viruses have also caused illness in humans in North America. Outbreaks of Avian flu in poultry may raise global public health concerns due to their effect on poultry populations, their potential to cause serious disease in people, and their pandemic potential. Most avian influenza viruses do not infect humans; however some, such as A(H5N1) and A(H7N9), have caused serious infections in people and can seriously impact local and global economies and international trade. The majority of human cases of A(H5N1) and A(H7N9) infection have been associated with direct or indirect contact with infected live or dead poultry.

Influenza is a homeostatic imbalance of the respiratory system that is of a changing strain each season. This disease is common, easily infection many people each day. Influenza onset is sudden, and each case can be either severe or mild. Epidemics of influenza began in the 1500s and still occur to the present day. Influenza is likely to infect more parts of the body than the common cold, and it is a highly contagious disease. By studying influenza, one can find the history dating centuries in the past, the onset of the disease, how it is transmitted, its impact, the role of genetics, and treatment of the disease.

In this task, the investigation will be done is about the emerging infectious disease and the name of disease will be researched is avian influenza. Avian Influenza is also known as bird flu, is a type A influenza virus. It is lethal to poultry and is potentially fatal in humans. Avian Influenza is defined as emerging infectious disease (Bird flu (avian influenza), 2012). Water birds such as wild ducks are believed to be the carriers of all avian influenza type A viruses. The viruses are carried inside the birds’ intestines and are distributed into the environment via bird faeces (poo). Migratory birds infected with the virus could potentially spread the bird flu to any of the countries they visit. Wild birds

Influenza viruses are classified as Type A, Type B, or Type C. They are then subcategorized based upon the genes that make up the viruses’ surface proteins. For Type A, there are two surface proteins that determine subcategories: hemagglutinin (H) and neuraminidase (N). There are 18 different hemagglutinin subtypes and 11 different neuraminidase subtypes. Type B viruses are not divided into subtypes, but rather, are broken down further based on varying strains of the virus. Humans cannot get type C, so it is not discussed often.

Restate Thesis: Influenza is a common virus that is present in almost every part of the world. Studies show that influenza causes people to be prevalent to other diseases, especially respiratory diseases. According to an article on The Lancet, August 14th, 2009 by Jamieson, the virus caused the widespread outbreak of respiratory infection

With a huge number of victims, 80 to 100 million, since 1918, the influenza is considered as one of the most pandemic diseases ever. There are three types of influenza virus: influenza virus A, influenza virus B, and influenza virus c. These are a subtypes of the virus family orthomyx-oviride. The types B and C do not cause pandemic diseases while type A does. The type A classified into three main subtype H1.N1, H1.N2, and H3.N2. The (H.N) refers to the two kinds of proteins on the surface of the virus (hemagglutinin and neuraminidase). The difference in numbers is due to the difference in protein variability. A H1.N1 virus which is widely known as Spanish flu is the only type that can transmit from human to human. The H5.N1, or “bird flu”