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The respiratory system is the first system targeted and hit in any influenza. Although stomach and GI viral infections are sometimes called "stomach flu", those are not really caused by an influenza virus, it is another kind of virus.
As influenza worsens in some individuals other body systems can be severely affected secondarily, such as renal (kidneys), central nervous system (fever induced seizures), etc.
What else can I help you with?
Which organism can cause influenza?
Viruses are responsible for causing influenza. A medium (vector) is required to transmit the viruses from a sick person to a healthy person. this may be an insect, animal or human depending on the situation.
What human illnesses caused by viruses?
Quite a few, HIV and influenza are probably the most common.
What is the difference between Type B flu viruses and the Swine Flu?
They are different types of influenza viruses. Human "Swine flu" (H1N1/09) is caused by Type A viruses.
What is the causative organism of seasonal influenza?
The common cold is an upper respiratory tract infection of viral origin, usually caused by a rhinovirus (up to 40% of colds), or by Coronaviruses (about 20%). These are the more common viruses, but there are more than 200 different viruses (some say as many as 700) that can cause the common cold. There are a huge number of different viruses from a number of different viral 'families' that cause cold symptoms. This is the main reason there is no vaccine for the common cold - there are simply too many different viruses to develop vaccines specific to each virus, and before a vaccine can be developed for a new viral mutation, it can mutate again.
What are some viruses that are harmful to humans?
Influenza virus (flu)rhinovirus (common cold)human immunodeficiency virus (HIV)
Are colds and the flu from the same virus?
No, they are different viruses and different types of viruses. Most common colds are caused by either the rhinoviruses or coronaviruses (but there are over 200 kinds of viruses that cause the common cold). Influenza is also caused by too many influenza viruses to name them all, but they are in the taxonomic family of viruses called orthomyxoviridae. Human influenza refers to one of the three major types of flu viruses ( Influenza types A,B, and C) that are endemic to the human population. If you mean the "stomach flu" (which is more appropriately called viral gastroenteritis), then it, too, is caused by different viruses; most common is norovirus (aka Norwalk Flu).
What is influenza type b?
There are four types of influenza viruses: A, B, C and D. Human influenza A and B viruses cause seasonal epidemics of disease almost every winter in the United States. Influenza type C infections generally cause a mild respiratory illness and are not thought to cause epidemics. Influenza D viruses primarily affect cattle and are not known to infect or cause illness in people.A, B and C cause a severe upper respiratory infections. These are more than 'just a cold.'
What flus are mixed to cause swine flu?
Tests have shown that it contains genetic material from Human, Avian, and Swine influenza viruses.
What is the influenza reservoir?
The different types of influenza have different reservoirs. To talk only of the types that humans get, the largest reservoir for human influenza Type A viruses (those that we see most often in seasonal flu and that cause pandemics of the flu) is the human being. In the bird flu that humans can get (Type A Avian Influenza H5N1 and H7N9), the biggest reservoir is wild aquatic fowl such as shorebirds, ducks and geese, but also commercial chicken farmers see it in their fowl, but less frequently. Influenza A viruses are also frequently isolated in pigs and horses. It is believed that the animal reservoirs are where most new human subtypes of influenza develop. This is true of the H1N1/09 pandemic swine flu which started in pigs and birds before mutating to be able to infect humans. Swine have been demonstrated to have receptors for both human and bird flu viruses, and as such are considered a potential mixing vessel for human, swine and avian viruses. (For more about that reassortant process that occurred with the H1N1/09 Swine Flu, see the related question about what caused the swine flu.)
What are some human virus?
Some human viruses are: Common Cold Influenza Chicken Pox Rotavirus Herpes Hepatitis Yellow Fever Encephalitis HIV/AIDS Human Papillomavirus --hope I helped!!
What do you call someone who studies the flu virus?
There are many different scientific disciplines that study human influenza viruses from their different perspectives. Some are:VirologistsInfectious Disease DoctorsMicrobiologistsImmunologistsEpidemiologistsBiologistsPhysiologistsPathologists
What are some specific examples of viruses?
Some naked viruses include poliomyelitis, warts, the common cold, chickenpox, shingles, mononucleosis, herpes simplex (cold sores), influenza, herpes viruses and HIV (AIDS). Some enveloped viruses include norovirus (stomach bug), rotavirus and human papillomavirus (HPV).
