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KEGG. D04536. Influenza vaccines, colloquially known as flu shots, are vaccines that protect against infection by influenza viruses. [13] [14] New versions of the vaccines are developed twice a year, as the influenza virus rapidly changes. [13] While their effectiveness varies from year to year, most provide modest to high protection against ...
Influenza (flu) The Centers for Disease Control and Prevention (CDC) estimates that, as of April 4, 2020, the 2019–2020 United States flu season had caused 39 million to 56 million flu illnesses, 410,000 to 740,000 hospitalizations and 24,000 to 62,000 deaths. [1] In January 2020, the Director of the National Institute of Allergies and ...
Influenza-like illness ( ILI ), also known as flu-like syndrome or flu-like symptoms, is a medical diagnosis of possible influenza or other illness causing a set of common symptoms. These include fever, shivering, chills, malaise, dry cough, loss of appetite, body aches, nausea, and sneezing typically in connection with a sudden onset of ...
Haemophilus influenzae. Haemophilus influenzae (formerly called Pfeiffer's bacillus or Bacillus influenzae) is a Gram-negative, non-motile, coccobacillary, facultatively anaerobic, capnophilic pathogenic bacterium of the family Pasteurellaceae. The bacteria are mesophilic and grow best at temperatures between 35 and 37 °C.
Everyone six months of age and older, who does not have contraindications, needs to get a flu vaccine, according to the CDC’s 2019-2020 flu season recommendations. While no vaccine can offer 100 ...
The vaccine produces a greater immune response than standard vaccine. According to the CDC, "a study published in the New England Journal of Medicine [in August, 2014] indicated that the high-dose vaccine was 24.2% more effective in preventing flu in adults 65 years of age and older relative to a standard-dose vaccine." The CDC recommends the ...
Influenza (flu) Since 1999, the World Health Organization (WHO) has issued annual recommendations for influenza vaccine formulations. One reformulation of the influenza vaccine is for the Northern Hemisphere, and the other is for the Southern Hemisphere. [1] Both recommendations are trivalent, i.e. featuring three strains.
In virology, influenza A virus subtype H1N1 ( A/H1N1) is a subtype of influenza A virus. Major outbreaks of H1N1 strains in humans include the 1918 Spanish flu pandemic, the 1977 Russian flu pandemic and the 2009 swine flu pandemic. It is an orthomyxovirus that contains the glycoproteins hemagglutinin (H) and neuraminidase (N), antigens whose ...