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Leia o aviso médico. Gripe é uma doença infecciosa causada por diversos vírus ARN da família Orthomyxoviridae e que afeta aves e mamíferos. Os sintomas mais comuns são calafrios, febre, rinorreia, dores de garganta, dores musculares, dores de cabeça, tosse, fadiga e sensação geral de desconforto.
Influenza, commonly known as "the flu" or just "flu", is an infectious disease caused by influenza viruses. Symptoms range from mild to severe and often include fever, runny nose, sore throat, muscle pain, headache, coughing, and fatigue.
- Classification
- Annual Flu
- Structure and Genetics
- Multiplicity Reactivation
- Human Influenza Virus
- Research
- See Also
Influenza A virus is the only species of the genus Alphainfluenzavirus of the virus family Orthomyxoviridae. There are two methods of classification, one based on surface proteins (originally serotypes), and the other based on its behavior, mainly the host animal.
The annual flu (also called "seasonal flu" or "human flu") in the US "results in approximately 36,000 deaths and more than 200,000 hospitalizations each year. In addition to this human toll, influenza is annually responsible for a total cost of over $10 billion in the U.S."Globally the toll of influenza virus is estimated at 290,000–645,000 deaths ...
Influenza A viruses are negative-sense, single-stranded, segmented RNA virus. The several subtypes are labeled according to an H number (for the type of hemagglutinin) and an N number (for the type of neuraminidase). There are 18 different known H antigens (H1 to H18) and 11 different known N antigens (N1 to N11). H17N10 was isolated from fruit bat...
Influenza virus is able to undergo multiplicity reactivation after inactivation by UV radiation,or by ionizing radiation. Upon infection, influenza virus induces a host response involving increased production of reactive oxygen species, and this can damage the virus genome.If, under natural conditions, virus survival is ordinarily vulnerable to the...
"Human influenza virus" usually refers to those subtypes that spread widely among humans. H1N1, H1N2, and H3N2 are the only known influenza A virus subtypes circulating among humans. Human flu symptoms usually include fever, cough, sore throat, muscle aches, conjunctivitis and, in severe cases, breathing problems and pneumonia that may be fatal. Th...
FI6, an antibodythat targets the hemagglutinin protein, was discovered in 2011. FI6 is the only known antibody effective against all 16 subtypes of the influenza A virus.
3 de out. de 2023 · Seasonal influenza (the flu) is an acute respiratory infection caused by influenza viruses. It is common in all parts of the world. Most people recover without treatment. Influenza spreads easily between people when they cough or sneeze. Vaccination is the best way to prevent the disease.
Há 6 dias · influenza, an acute viral infection of the upper or lower respiratory tract that is marked by fever, chills, and a generalized feeling of weakness and pain in the muscles, together with varying degrees of soreness in the head and abdomen.
- The Editors of Encyclopaedia Britannica
- Influenza is an acute viral infection of the upper or lower respiratory tract marked by fever, chills, and a generalized feeling of weakness and pa...
- Influenza is caused by several closely related viruses in the family Orthomyxoviridae, an RNA virus group. Influenza viruses are categorized as typ...
- Pandemics are worldwide outbreaks of a disease and are estimated to occur on average once every 50 years for influenza. Epidemics happen much more...
- When an influenza pandemic emerges, WHO adheres to its six-phase preparedness plan. Phases 1–3 are the early stages in pandemic preparedness design...
- The symptoms of influenza include sudden and distinct chills, fatigue, and muscle aches. A person’s body temperature rises rapidly to 38–40 °C (101...
Influenza refere-se à doença causada pelos vírus da influenza, mas o termo é, geralmente, incorretamente usado para se referir a doenças semelhantes, provocadas por outros patógenos respiratórios virais. Os vírus da influenza são classificados como tipo A, B e C, por suas nucleoproteínas e proteínas matrizes.
22 de mar. de 2024 · What is Influenza (Flu)? Flu is a contagious respiratory illness caused by influenza viruses that infect the nose, throat, and sometimes the lungs. It can cause mild to severe illness, and at times can lead to death. The best way to prevent flu is by getting a flu vaccine each year.
