The flu vaccine is built on the strains expected to circulate in a given year. While the majority of strains circulating this year are matched in the vaccine, there's one strain we didn't predict.
You might feel a bit off after your flu shot but this doesn’t last long.
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The flu vaccine takes about two weeks to start working and only protects against influenza, so you can still get sick from other viruses after your flu shot.
You might feel terrible. But your runny nose, sore throat and aches are signs your body is fighting the flu virus. And that’s a good thing.
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Children's immune systems are more vulnerable to the flu; even kids who are otherwise healthy can develop complications. The best way to protect children is by having them vaccinated.
They’re not perfect, but flu shots are still good to get.
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The 2018-2019 flu season was less deadly than the last. But the pattern of infection was unusual, thanks to the various strains circulating and the way flu shots work over time.
The new approach to keep research ready to go could be useful for other health emergencies, including other infectious diseases.
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Colin Simpson, Te Herenga Waka — Victoria University of Wellington
All too often, researchers around the world act in competition when trying to answer research questions in an emergency situation, such as outbreaks of the flu. The UK is trialling a new approach.
The flu comes on rapidly and symptoms get worse over the first few days.
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Sheena G. Sullivan, WHO Collaborating Centre for Reference and Research on Influenza y Rob Moss, University of Melbourne
The 2018 flu season was mild, while 2017 was a particularly bad year. It's impossible to predict what the 2019 flu season has in store, but we've seen more cases so far this year than usual.
There are three types of flu vaccine available in Australia.
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Ian Barr, WHO Collaborating Centre for Reference and Research on Influenza
Protection wanes after four or five months, so for most people, it makes sense to get a flu shot in mid to late May or early June so you're protected when the flu season peaks in August or September.
Little yellow-shouldered bat.
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We commemorate the centenary of the end of WW1, but victims of a more deadly threat are rarely remembered. Let's change that.
Californians in June 2015 protest a bill that did away with personal belief exemptions for vaccinating children before they enter school.
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Vaccination rates for children in some parts of California are down, despite a law that narrowed exemptions. Here's a look at why people refuse to listen to evidence when it comes to the flu vaccine.
The flu virus changes over time – which is why you need a different flu shot each year.
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Important research questions can almost always be answered better with a combination of methods – where both quantitive and qualitative data play a role.
The flu shot decrease the risk of heart attacks in healthy individuals, according to research. Here, pipettes containing immune cells for testing against possible flu vaccines are seen at the National Institutes of Health in Bethesda, Md., in 2017.
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Your risk of a heart attack increases 600 per cent within a week of catching the flu. The flu shot decreases that risk, whether you catch the flu or not.
A nurse in Atlanta reaches for a vial of vaccine to prepare for an injection.
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The flu shot is most effective if you receive it by the end of October. With 80,000 deaths from flu during last year's flu season, a doctor explains why you should act now.
One-year-old Kilian Doherty being prepared for a chest X-ray Feb. 9, 2018 to determine if he had flu.
David Goldman/AP Photo
Regular hand washing is important not only to keep from getting the flu but also to prevent passing it to others, such as young children and seniors, who may be even more vulnerable. Here's how.
An Atlanta hospital set up a mobile ER to deal with the large number of flu cases.
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In the event of pandemic flu, poor countries will suffer the most.
A poster from a world summit in Hong Kong on preparing for worldwide pandemics in June 2010. Despite efforts to develop plans, none is yet in place.
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Deputy Director, Pandemic & Biosecurity Policy Program, Scowcroft Institute of International Affairs, Bush School of Government and Public Service, Texas A&M University