how serious is type a flu?
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Type A influenza can be dangerous and is known to cause outbreaks and increase your risk of disease. Unlike a type B infection, type A viruses are categorized by subtypes and strains. Influenza A mutates faster than influenza B, but both viruses are always changing, creating new strains from one flu season to the next.
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Vaccination to prevent flu is particularly important for people who are at high risk of developing serious flu complications. See People at High Risk of Developing Flu-Related Complications for a full list of age and health factors that confer increased risk.
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In recent years, flu vaccines have reduced the risk of flu-associated hospitalizations among older adults on average by about 40%. A 2018 study showed that from 2012 to 2015, flu vaccination among adults reduced the risk of being admitted to an intensive care unit (ICU) with flu by 82 percent.
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You can also develop CAP after you get a common viral infection, such as a cold or the flu. The illness ranges from mild to serious and, if left untreated, can lead to respiratory failure or death.
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There are three types of flu viruses: A, B, and C. Type A and B cause the annual influenza epidemics that have up to 20% of the population sniffling, aching, coughing, and running high fevers. Type C also causes flu; however, type C flu symptoms are much less severe.
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Flu symptoms typically last about a week, but the most severe symptoms only occur for two to three days (though it might feel like an eternity). You might continue to experience fatigue, weakness, and a cough for another week after you recover.
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There is generally a virus-like mild phase, followed by a rapid deterioration, during which the patient clinically appears more ill with high fever and respiratory distress. Some patients have a two-phased illness with croup, initial recovery, followed by tracheitis.
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For adults, side effects include runny nose, headache, sore throat and cough. These side effects last a short time compared to the actual flu illness, the CDC says.
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Most people who have the flu (influenza) have a mild illness and don't need to see a doctor. Common flu signs and symptoms include: Fever above 100 F (38 C), though not everyone with the flu has a fever.
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Seroconversion illness happens to most (but not all) people shortly after infection. It can be severe enough to put someone in hospital or so mild that it's mistaken for something like flu – although a blocked or runny nose is not usually a symptom.
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The flu starts suddenly and hits hard. You will probably feel weak and tired and have a fever, dry cough, a runny nose, chills, muscle aches, a bad headache, eye pain, and a sore throat. It usually takes longer to get over the flu than a cold.
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AFib is a serious diagnosis. While this condition isn't fatal in itself, it can lead to potentially life-threatening complications. Two of the most common complications of AFib are stroke and heart failure, both of which can be fatal if not managed quickly and effectively.
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Mono isn't usually a serious illness, but you can have complications that make it more dangerous. The symptoms of mono can range from mild to severe. You may not be able to take part in your normal daily activities for several weeks.
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The vaccine given to adults aged 18 to 64 in at-risk groups is estimated to be 39% effective against the same strain. Influenza A(H1N1)pdm09 has been the main strain circulating this season. As the number of cases is lower, a precise estimate for those aged 65 and over will not be available until the end of the season.
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Adults with a sustained fever of more than 102 degrees, as well as any combination of the below flu-like symptoms, should seek medical attention: Difficulty breathing. Severe chest or stomach pain.
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['Being very tired or sleepy (also called fatigue)', 'Cough.', 'Fever (100 F or above), chills or body shakes. Not everyone who has the flu has a fever.', 'Headache, or muscle or body aches.', 'Runny or stuffy nose.', 'Sore throat.', 'Vomiting (throwing up) or diarrhea.']
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What Are the Different Types of Flu? There are three types of flu viruses: A, B, and C. Type A and B cause the annual influenza epidemics that have up to 20% of the population sniffling, aching, coughing, and running high fevers. Type C also causes flu; however, type C flu symptoms are much less severe.