The flu is caused by viruses in the family Orthomyxoviridae. Influenza viruses types A and B cause seasonal flu outbreaks, and the flu vaccine provides protection against both virus types. Although these viruses have many similarities, they also...
Doctors' offices and laboratories offer several types of tests for influenza, which vary by accuracy, availability and the time required to get a result. All tests for influenza detect both influenza A and B viruses, which cause the flu. Not...
The influenza virus has three classifications; type A, B and C. Influenza spreads rapidly and can occur as local or regional epidemics or global pandemics. While becoming infected with any strain of influenza virus leads to immunity to that...
Influenza is an acute infectious disease that affects the respiratory tract. It is characterized by the abrupt onset of headache, fevers, chills, muscle pains, severe malaise, cough, sore throat and rhinitis. The acute illness generally resolves...
Influenza are simple viruses, composed of a ribonucleic acid genome surrounded by a protein shell. These viruses are responsible for the infectious disease influenza, which affects birds and mammals, inducing symptoms, which include fever, chills,...
Influenza, or flu, is a contagious respiratory ailment caused by flu viruses. In extreme cases, influenza can cause death. In most cases, however, the flu causes mild to severe illness. Young children and the elderly are most susceptible to...
Influenza, most commonly known as the flu, is a virus that attacks the respiratory system. Highly contagious, influenza can cause severe illness and even death. According to the Centers for Disease Control and Prevention (CDC), up to 20 percent of...
Influenza is a highly contagious respiratory disease that is caused by influenza viruses. Infection usually lasts for about a week and symptoms include high fever, muscle ache, headache, cough and sore throat, according to the World Health...
Influenza B is a viral infection that attacks parts of the respiratory system such as the nose, throat and lungs, according to MayoClinic.com. There are three types of influenza viruses: A, B and C. Type A is responsible for worldwide epidemics,...
Influenza, also known as the flu, is a respiratory infection. The flu virus infects the cells in the upper respiratory tract, including the nose, throat and lungs. It can cause moderate to severe complications in all age groups. These include...
The influenza virus spreads mainly from person to person, and is generally considered to be contagious from one day before onset of symptoms to as much as a week after the infected person becomes sick. The virus is thought to spread mainly through...
The influenza virus is a highly contagious virus that results in a high fever as well as serious complications such as pneumonia in elderly patients, children and immunocompromised individuals. According to MedlinePlus, a publication of the...
Influenza is an ever-changing viral respiratory infection that causes illnesses between October and April. The heaviest period of flu illnesses is in January and February, according to Immunize North Carolina. Although the flu in most people is...
Influenza outbreaks occur each winter at an annual cost of $12 billion to $71 billion in the United States alone, reports Harvard Medical School professor Dr. Raphael Dolin in “Harrison’s Principles of Internal Medicine.” An...
According to the Centers for Disease Control and Prevention (CDC), seasonal influenza sidelines millions of Americans each year. In some cases, it produces more serious sickness: approximately 200,000 hospitalizations and 36,000 deaths are linked...
Spanish Influenza is the common name for the flu virus that caused the 1918-1919 pandemic that Centers for Disease Control and Prevention (CDC) researchers dub "the mother of all pandemics." The Spanish Influenza pandemic is credited for up to 100...
Influenza, also known as seasonal flu, is an extremely infectious condition caused by one of many different types of flu virus. The virus that causes influenza targets your lungs and upper airways, causing symptoms such as aches and pains and a...
According to Dr. Raphael Dolin in "Harrison's Principles of Internal Medicine," there are three types, or "genera," of influenza viruses: A, B and C. Epidemics are usually caused by influenza A viruses, in part because of their ability to rapidly...
The influenza virus causes a respiratory disease often called "the flu." The New York State Health Department reports that more than 200,000 people infected with the flu are hospitalized every year, and about 36,000 people die from the flu every...
Influenza is also referred to as the flu or seasonal flu. Influenza is a highly contagious respiratory illness caused by a virus. The flu is generally mild in nature, but in some cases, it can lead to advanced distress, hospitalization and even...
A seasonal disease caused by the orthomyxoviridus virus, influenza causes 36,000 deaths annually in the United States, according to Oregon.gov. Influenza is highly contagious, spreading by airborne droplets and contaminated surfaces. The majority...
Influenza, commonly referred to as flu, is a viral infection that lasts for about a week and is characterized by fever, muscle pain, sore throat, headache and weakness. N-acetylcysteine, or NAC, may be used as an adjuvant therapeutic drug for...
The influenza virus is a highly contagious virus that infects the epithelial cells of the respiratory tracts, notes Microbiology and Immunology Online, a website provided by the University of South Carolina School of Medicine. The influenza virus...
Influenza, often called "the flu," is caused by a type of virus that causes a respiratory illness that can range from mild to severe. Symptoms include fatigue, sore throat, stuffy nose, muscle aches and headaches according to the Centers for...
Influenza is a contagious respiratory virus that produces mild-to-severe disease in people of all ages. Most people who become sick with influenza experience mild-to-moderate disease that resolves on its own within two to five days. Some...
The Centers for Disease Control and Prevention lists three types of influenza virus: Type A, Type B and Type C. Some types have subcategories. The CDC estimates that between 1976 and 2007 there have been upward of 49,000 deaths in the United...
Influenza B, also known as the flu, is a contagious viral infection affecting the throat, nose and lungs, says MedlinePlus.
There are three basic types of the influenza virus: A, B and C, according to the Centers for Disease Control and Prevention (CDC). Influenza A and B are the most common strains that afflict the estimated five million to 20 million Americans...
Influenza, or the flu, is a viral infection that affects the respiratory system including the nose, throat and lungs. Learn about influenza including symptoms, treatments and diagnosis in this health and disease video.
Bird flu has led to the deaths of hundreds of millions of wild and domestic birds and to a small number of human deaths. Bird flu remains difficult for humans to contract. Learn about the different causes, symptoms, and treatments of bird flu in...
Influenza, more commonly referred to as the flu, is a viral infection that attacks the respiratory system, including your nose, throat, bronchial tubes and lungs. The flu should not be taken lightly. Thousands of people die of complications due to...
