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2. Influenza - Wikipedia

   en.wikipedia.org/wiki/Influenza

   The number of deaths probably exceeded one million, mostly among the very young and very old. [68] This was the first flu pandemic to occur in the presence of a global surveillance system and laboratories able to study the novel influenza virus. [34] After the pandemic, H2N2 was the influenza A virus subtype responsible for seasonal influenza. [1]

3. Influenza A vs. Influenza B: Which Flu Virus Is Worse? - AOL

   www.aol.com/influenza-vs-influenza-b-flu...

   A flu pandemic is when a new type of influenza virus emerges—that most people aren’t immune to—and spreads around the world. ... “Because of these wide number of different carriers ...

4. List of seasonal influenza vaccines - Wikipedia

   en.wikipedia.org/wiki/List_of_seasonal_influenza...

   The vaccine produces a greater immune response than standard vaccine. According to the CDC, [1] "a study published in the New England Journal of Medicine [25] [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 ...

5. Polyvalent influenza vaccine - Wikipedia

   en.wikipedia.org/wiki/Polyvalent_influenza_vaccine

   Polyvalent influenza vaccine is a type of influenza vaccine that provides immunity against more than one type of antigen. [1] In the second week after receiving the flu shot, the body's immune system is triggered by the antigens so the body starts producing antibodies. These antibodies help fight against influenza viruses.

6. Risk Factors for Severe Flu Doctors Want You to Know About - AOL

   www.aol.com/risk-factors-severe-flu-doctors...

   What are the risk factors for severe flu? The CDC report analyzed data from laboratory-confirmed flu-related hospitalizations in children and adults between 2010 and 2023. It noticed a few trends ...

7. At Last, New Weapons in the Fight Against Colds and Flu

   www.aol.com/last-weapons-fight-against-colds...

   Most flu shots contain an antigen, or protein, from a mix of flu viruses selected based on what’s circulating. A nasal spray version contains a live but harmless version of the virus instead.

8. Breakthrough infection - Wikipedia

   en.wikipedia.org/wiki/Breakthrough_infection

   A 2021 study found the common flu vaccine provided immunity to the flu in 58% of recipients. [6] The measles vaccine fails to provide immunity to 2% of children that receive the vaccine. However, if herd immunity exists, it typically prevents individuals who are ineffectively vaccinated from contracting the disease. [ 7 ]

9. Flu crisis in numbers: Where cases are rising as NHS ... - AOL

   www.aol.com/news/flu-crisis-numbers-where-cases...

   This year’s flu rates are in line with the 2022 flu surge, according to figures from the Health Security Agency, but are far higher than the same time last year (with 12.9 per cent of flu tests ...