Clinical features of influenza influenza, commonly called the flu, is caused by viruses that infect the respiratory tract compared with most other viral respiratory infections, such as the common cold, influenza infection often causes a more s. O influenza virus or essay must be at least 280 words it should include citations and references to support your conclusions we are the leading academic assignments writing company, buy this assignment or any other assignment from us and we will guarantee an a+ grade. Avian influenza (bird flu) an influenza pandemic is a global outbreak of disease that occurs when a new influenza a virus appears or emerges in the human population, causes serious illness, and then spreads easily from person to person worldwide. Avian flu, or bird flu, refers to a group of infectious diseases caused by influenza viruses that infect birds and make them ill one subtype of bird flu is h5n1 h5n1 is a severe infection with a.
China has withheld samples of a dangerous flu virus despite an international agreement, us health authorities still have not received h7n9 avian flu specimens from their chinese counterparts. The avian flu virus can get transmitted to humans from animals in two ways (centers for disease control and prevention [cdc] 2005) first, it can be from birds or environments contaminated with the virus to people. Influenza essay influenza is a disease also known as ‘the flu’ which is most common in the us influenza is caused by a contagious virus that is spread by fluids of coughing, sneezing and direct eye contact from surfaces where serious infection and death occur around the world mostly in winter.
The first three genera contain viruses that cause influenza in vertebrates, including birds (see also avian influenza), humans, and other mammals isaviruses infect salmon the thogotoviruses are arboviruses , infecting vertebrates and invertebrates , such as ticks and mosquitoes. The h5n1 avian flu virus was highly pathogenic and had caused disease widely in wild birds and poultry (cdc, 2009) it caused 408 human cases by february 2009 guidance for testing of suspected human cases infected with pathological avian flu with h5n1 influenza virus were provided. Phylogenetic studies have confirmed this showing that the 1918 'spanish flu' was caused by a virus of entirely avian origin while reassortment of human and avian influenza viruses caused the pandemic strains of 1957 and 1968. Influenza a/h5n1 has evolved into a flu virus strain that infects more species than any previously known strain, is deadlier than any previously known strain, and continues to evolve, becoming both more widespread and more deadly. Avian influenza avian influenza (flu) is a threat that has been discussed since 2003 when humans in asia began to become infected and die the virus has gone through many changes since it was first detected, which is a concern for fear that a novel virus will occur that will sustain a human to human transmission which would lead to a avian flu pandemic (guterman, 2005.
Avian influenza, also known as bird flu, is a zoonotic disease with several different subtypes that affect mostly other birds, but few can be transmitted to humans the most prevalent avian influenza virus in humans is the highly pathogenic avian influenza a (h5n1) virus, which has caused over 380 confirmed cases in 15 countries (rabinowitz, 2010. The most prevalent avian influenza virus in humans is the highly pathogenic avian influenza a (h5n1) virus, which has caused over 380 confirmed cases in 15 countries (rabinowitz, 2010) majority of cases have been transmitted via bird-to-human, with rare cases of human-to-human transmission. The influenza b virus does not mutate as quickly as the a virus in viewing the maps and tables for the past several years, patterns suggest that there is a definite flu season usually starting around week forty-eight and ending around week sixteen of the year. The bird flu is mainly caused by viruses that circulate in wild animals, as well as swine influenza virus subtypes h1n1 and h3n2 (bartolotti, r 2012 p5) prior to the 2009 pandemic, the world health organization predicted that the next pandemic would be caused by the influenza a subtype, which was said to be most likely from “avian origin. Avian influenza—known informally as avian flu or bird flu is a variety of influenza caused by viruses adapted to birds the type with the greatest risk is highly pathogenic avian influenza (hpai)bird flu is similar to swine flu, dog flu, horse flu and human flu as an illness caused by strains of influenza viruses that have adapted to a specific host out of the three types of influenza.
Avian influenza virus avian influenza virus what is influenza influenza, commonly referred to as the flu, is an infectious disease caused by rna viruses of the family orthomyxoviridae (the influenza viruses), that affects birds and mammals. Avian influenza (ai), also known as bird flu, is an infectious disease caused by various strains of ai virus it majorly affects wild water fowl for example geese and ducks, however it can cause large-scale outbreak among domestic poultry resulting into significant economic loss 1. All you need to know about flu flu, also known as influenza, is a respiratory illness caused by a virus influenza is highly contagious and can be life-threatening for some population groups. Coping with a deadly avian influenza epidemic biology essay published: november 2, a vaccine has been developed to protect humans against the avian influenza virus however due to the low transmission rate of avian influenza it is has not been used by the general public the vaccine contains an antigen with an adjuvant (a chemical that. Further investigations showed the eight rna strands from h1n1 flu had one strand derived from human flu strains, two from avian (bird) strains, and five from swine strains the usual mortality (death) rate for typical influenza a is about 01 per cent, while the 1918 'spanish flu' epidemic had an estimated mortality rate ranging from 2-20 per cent.
Introduction influenza, commonly known as the flu, is an acute viral infection of the respiratory tract caused by influenza viruses although it is often confused with other influenza-like illnesses, especially the common cold, influenza is a more severe disease caused by a different type of virus. Epidemiology of avian influenza h5n1 virus - bird flu (h5n1) which is also known as avian influenza h5n1 is a highly pathogenic flu that has infected many poultries and humans in the world, mostly in asian countries. Essay on avian influenza and its expected ramifications 2761 words | 12 pages over the past fifteen years h5n1 influenza (also known as avian flu or bird flu) has become a common topic of speculation and debate worldwide, causing quite a bit of confusion about its possible impacts on our society.
Avian influenza a viruses are designated as highly pathogenic avian influenza (hpai) or low pathogenicity avian influenza (lpai) based on molecular characteristics of the virus and the ability of the virus to cause disease and mortality in chickens in a laboratory setting. Infection with avian influenza viruses in domestic poultry causes two main forms of disease that are distinguished by low and high extremes the low pathogenic form may go undetected and usually causes only mild symptoms such as ruffled feathers and a drop in egg production. Influenza virus – essay sample adaptive and mutated strains of the influenza virus have provided emergence of a new strain called h1n1(2009) this potentially leading towards pandemic conditions that can spread amongst the human population.