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There are 15 different Influenza A subtypes that can infect birds
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How many birds have baby birds at the same time?
it depends on the birds some birds 1 other 5 and some a dozen
How many types of birds live at the coorong?
there are over 1,000 birds there!
Two birds in front of a bird two birds behind the bird how many birds are possible?
5 dah!
How many episodes of the thorn birds was there?
4 Movies Plus The Missing Birds
Which wild birds eat cranberries?
Yes. Many wild birds eat fruit.
How many types of the Influenza Viruses are there?
According to the United States Center for Disease Control and Prevention, there are 4 types of Influenza viruses, but only three infect humans (A, B & C). Influenza D infects cattle and is not known to infect people.
How many types are there of influenza viruses?
According to the United States Center for Disease Control and Prevention, there are 4 types of Influenza viruses, but only three infect humans (A, B & C). Influenza D infects cattle and is not known to infect people.
Are all influenza Type A viruses the Swine Flu?
No, the pandemic A-H1N1/09 "swine flu" is just one of many Type A influenza strains. It is also one of many H1N1 flu subtypes. Besides Type A influenzas, there are also influenza Types B and C in humans.
Is influenza restricted to Homo sapiens?
No, there are types of influenza viruses that many different groups of mammals can get infected by, as well as birds (such as the avian/bird flu).
What is the difference between Flu A and Flu B?
They are caused by two different kinds of viruses. There are three types of influenza viruses that have been classified according to the types of proteins they have. There are Type A, Type B, and Type C influenza viruses. Type A and B each have many different strains. Type C does not.Type A influenza is one of the more common types we see in the seasonal flu among humans and it is also a very common type that many other animals get. It has subtypes and strains that differ, which is why having one subtype will not give you immunity from all the other subtypes and strains.Type B influenza is also a common type among humans and is found only in humans. It is not divided into subtypes but there are multiple strains.Type C has been found in humans, pigs, and dogs. The symptoms are usually very mild, milder than those of Type A and B influenza viruses, and it typically doesn't cause epidemics. It is not divided into different subtypes or strains.
What pathogen causes influenza?
The signs and symptoms of the flu infection are:"Having Flu Symptoms Can Make Moaning Children A Nightmare":HeadacheFeverSore throatChillsMyalgias (pains)MalaiseCoughAnorexiaNasal congestionThe influenza virus causes influenza. There are a number of different subtypes and many have caused pandemics. These subtypes are A, B and C. Type A causes human "flu". This virus mutates rapidly and the vaccine must change quickly as well.A pathogen is anything that can produce disease or an infectious agent. A pathogen for influenza has a globular or spherical shape. Influenza is caused by a virus.
What type of organisms cause the diseases Influenza and SARS?
Influenza and SARS are both caused by viruses, although different ones. Both of these infectious diseases cause severe upper respiratory infections. Influenza in humans, aka the seasonal flu, is caused by three types of viruses: influenza Types A, B, and C. Swine flu is an influenza type A, for example. Within each type there are mutations and countless numbers of strains and subtypes. The influenza viruses are RNA viruses that come from the family Orthomyxoviridae. The SARS (Severe Acute Respiratory Syndrome) virus causes the same symptom complex as "atypical pneumonia". It is an RNA virus that has been found in humans and birds. The name of the SARS virus is SARS coronovirus (SARS-CoV). It is one of many coronaviruses (some of which also cause a large percentage of common cold infections).
Subtypes are connected to the supertype by a relationship known as?
many-to-many
What is the difference between H1N1 H1N2 H3N2 and H3N1 viruses?
Overview:H1N1, H1N2, and H3N2 are the only known Influenza A virus subtypes currently circulating among humans. All the subtypes listed in the question, i.e., H1N1, H1N2, H3N1 and H3N2 are the known subtypes of influenza A viruses that are endemic in pigs and create influenza in pigs, from which reassortants have formed new strains that can be infective to humans. H1N1 is the "swine flu" subtype of influenza, of which there are several different strains. This subtype is usually seen in humans and pigs. The better known reassortant H1N1 virus strain currently circulating is H1N1/09, the pandemic swine flu virus that caused the pandemic of 2009 and infected humans, pigs, birds, ferrets, dogs, and cats during the pandemic. There are several other less well known strains of the H1N1 subtype.H1N2 is a common flu in pigs in the Upper Midwest of the US. Until 2011, only one case had been known to occur in humans and that was in 2007 in Michigan. The second ever known case was found in an infant in December 2011 in Minnesota.H3N1 mostly only infects pigs.H3N2 is the subtype that produced a strain of flu that caused the Hong Kong Flu and another was the cause of the Fujian Flu, etc. In birds, humans, and pigs, there have been many new strains mutated and this subtype is becoming more prevalent in seasonal influenza.For background, the meanings of "H" and "N" in the nomenclature:Hemagglutinin: An important surface protein on the capsid (coat) of the influenza virus that is essential for the reproduction and the spread of the virus in the body in the lytic cycle of virus replication. This protein enables the virus to attach itself to a cell in the respiratory system or other mucous tissue and penetrate it to invade and use the host cell for reproduction. Referred to as the "H" in influenza viruses.Neuraminidase: An important surface structure protein of the influenza virus that is an essential enzyme for the spread of the virus throughout the respiratory tract. It enables the virus to escape the host cell and infect new cells. Referred to as the "N" in influenza viruses.See more about the lytic cycle and influenza virus nomenclature in the related questions below.Types of Influenza VirusesThere are three types of influenza viruses: Types A, B and C. Influenza A and B viruses cause seasonal outbreaks and epidemics of influenza virus infections each flu season. Type A causes all pandemics. Influenza type C infections cause a mild respiratory illness and are not thought to cause epidemics. Influenza A viruses are divided into subtypes based on the configuration of the two proteins on the surface of the viruses: hemagglutinin (H) and neuraminidase (N). [Not all H1N1 viruses are the same; not all H5N1 viruses are the same.....etc] There are 16 different hemagglutinin subtypes and 9 different neuraminidase subtypes. Influenza A viruses can be further broken down into different strains.Influenza B viruses are not divided into subtypes. Influenza B viruses also can be further broken down into different strains.Influenza A (H1N1), A (H3N2), and influenza B strains are included in each year's influenza vaccine. Getting a flu vaccination can protect against influenza A and B viruses. The flu vaccine does not protect against influenza C viruses.More information including how influenza viruses change: Drift and ShiftInfluenza viruses are dynamic and are continuously mutating, reassorting, and evolving. Influenza viruses can change in two different ways: antigenic drift and antigenic shift. Influenza viruses are changing by antigenic drift all the time, but antigenic shift happens only occasionally. Influenza type A viruses undergo both kinds of changes; influenza type B viruses change only by the more gradual process of antigenic drift. Antigenic drift refers to small, gradual changes that occur through point mutations in the two genes that contain the genetic material to produce the main surface proteins, hemagglutinin, and neuraminidase. These point mutations occur unpredictably and result in minor changes to these surface proteins. Antigenic drift produces new virus strains that may not be recognized by antibodies produced after exposure to earlier influenza strains.This process works as follows: a person infected with a particular influenza virus strain develops antibodies against that strain. As newer virus strains appear, the antibodies against the older strains might not recognize the "newer" virus to inactivate it, and infection with a new strain can occur. This is one of the main reasons why people can become infected with influenza viruses more than one time and why global surveillance is critical in order to monitor the evolution of human influenza virus stains for selection of which strains should be included in the annual production of influenza vaccine.In most years, one or two of the three virus strains in the seasonal influenza vaccine are updated to keep up with the changes in the circulating influenza viruses. For this reason, people who want to be immunized against influenza need to be vaccinated every year.Antigenic shift refers to an abrupt, major change to produce a novel influenza A virus subtype in humans that had not been currently circulating among people (see more information below under Influenza Type A and Its Subtypes).Antigenic shift can occur either through direct animal (poultry)-to-human transmission or through mixing of human influenza A and animal influenza A virus genes to create a new human influenza A subtype virus through a process called genetic reassortment or reassortant. Antigenic shift results in a new human influenza A subtype.A global influenza pandemic (worldwide spread) may occur if three conditions are met:A new subtype of influenza A virus is introduced into the human population.The virus causes serious illness in humans.The virus can spread easily from person to person in a sustained manner.
Is influenza caused by birds?
The Avian "Bird" flu is passed to humans by birds and their saliva and feces. Other forms of influenza that humans can get are also mutations of viruses that birds have had, some are from pigs (like swine flu) and many are from a combination of various swine, human, other, and bird flu strains that "reassort" in a host animal. For more information about how a new strain of the flu can be created through reassortant, see the related question below about what caused the 2009 Swine flu.
How do you use the word influenza in a sentence?
This is the correct word that is usually abbreviated as "flu." Here are some sentences.The influenza epidemic left many dead and thousands weakened.I have had my influenza vaccine.She caught influenza and was sick for a whole week.
What viruses causes bird flu?
A Type A influenza virus causes Avian "bird" Flu. The specific virus strains of bird flu that infect humans are called Avian influenza, A-H5N1 virus and Avian influenza, A-H7N9 (newly identified in humans near Easter Sunday 2013 in China). Viruses can change or mutate over time. The strain of avian bird flu that caused the scare in Europe was H5N1. There are many different types (subtypes) of this virus, but the one that has been in the news the most is H5N1 because it infects not only birds but can also infect humans, killing them in 50 to 60% of the cases. It is not easily transmitted from person to person, so it has not spread in humans like other types of influenza have so far.Additional information:Although they can be considered organisms, they are not living organisms, for that reason not all scientists classify a virus as a "microbe". Most of them do for lack of a better way to talk about them instead of "germ" or other less specific nomenclature. As stated above, unlike the other organisms called microbes, they are not living organisms. They are specialized groups of "cells" that perform functions working in an organized way, but they latch on to and break into a living host's cells and use the life, energy, and nutrients from the host in an almost parasitic way. The genetic material that they have stored inside themselves combines with that of the host's cells to cause the host cells to stop reproducing more cells like itself for the host. Instead, the virus instructs them to start making duplicate viruses like the one that invaded the host.H5N1 is an extremely virulent influenza virus that can infect birds, occasionally pigs, rarely infections in other animals, and very rarely humans. Fortunately, it does not spread very easily, and only extremely rare human to human transmissions have been known to occur. No instance of the virus spreading beyond a first generation of close human contacts has been reported. It does, however, have a very high mortality rate in animals and in humans (60% death rate in humans).
