This information is presented in a weekly report, called FluView. Spread of the H1N1 virus is thought to occur in the same way that seasonal flu spreads. Flu viruses are spread mainly from person to person through coughing, sneezing or talking by people with influenza. Sometimes people may become infected by touching something — such as a surface or object — with flu viruses on it and then touching their mouth or nose.
Getting infected with any influenza virus, including H1N1, should cause your body to develop immune resistance to that virus so it's not likely that a person would be infected with the identical influenza virus more than once. However, people with weakened immune systems might not develop full immunity after infection and might be more likely to get infected with the same influenza virus more than once. However, it's also possible that a person could have a positive test result for flu infection more than once in an influenza season.
This can occur for two reasons:. Joe Bresee describes how to keep from getting the flu, and spreading it to others. The symptoms of H1N1 flu virus in people include fever, cough, sore throat, runny or stuffy nose, body aches, headache, chills and fatigue. Some people may have vomiting and diarrhea. People may be infected with the flu, including H1N1 and have respiratory symptoms without a fever. Severe illnesses and deaths have occurred as a result of illness associated with this virus. Illness with H1N1 virus has ranged from mild to severe.
While most people who have been sick have recovered without needing medical treatment, hospitalizations and deaths from infection with this virus have occurred. This includes people 65 years and older, children younger than five years old, pregnant women, and people of any age with certain chronic medical conditions.
This includes pregnancy, diabetes, heart disease, asthma and kidney disease. Young children are also at high risk of serious complications from H1N1, just as they are from seasonal flu. CDC laboratory studies have shown that no children and very few adults younger than 60 years old have existing antibody to the H1N1 flu virus; however, about one-third of adults older than 60 may have antibodies against this virus.
It is unknown how much, if any, protection may be afforded against H1N1 flu by any existing antibody. Most people who get the flu either seasonal or H1N1 will have mild illness, will not need medical care or antiviral drugs, and will recover in less than two weeks. Some people, however, are more likely to get flu complications that result in being hospitalized and occasionally result in death. Pneumonia , bronchitis, sinus infections and ear infections are examples of flu-related complications.
The flu can also make chronic health problems worse. For example, people with asthma may experience asthma attacks while they have the flu, and people with chronic congestive heart failure may have worsening of this condition that is triggered by the flu.
The list below includes the groups of people more likely to get flu-related complications if they get sick from influenza. Flu seasons vary in terms of timing, duration and severity.
Seasonal influenza can cause mild to severe illness, and at times can lead to death. Each year, in the United States, on average 36, people die from flu-related complications and more than , people are hospitalized from flu-related causes.
Of those hospitalized, 20, are children younger than 5 years old. CDC estimates of the numbers of H1N1 cases, hospitalizations and deaths are that people younger than 65 years of age are more severely affected by H1N1 flu relative to people 65 and older compared with seasonal flu.
However, because severe illness and deaths have occurred among people 65 and older and because supplies of H1N1 vaccine have increased dramatically, CDC is now encouraging all people 6 months and older, including people older than 65, to get vaccinated against H1N1. Influenza Flu. Section Navigation. Facebook Twitter LinkedIn Syndicate.
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Do I need to go the emergency room if I am only a little sick? Are there medicines to treat H1N1? They are: People at High Risk for Developing Flu-Related Complications Children younger than 5, but especially children younger than 2 years old Adults 65 years of age and older Pregnant women People who have: Asthma Neurological and neurodevelopmental conditions [including disorders of the brain, spinal cord, peripheral nerve, and muscle such as cerebral palsy, epilepsy seizure disorders , stroke, intellectual disability mental retardation , moderate to severe developmental delay, muscular dystrophy, or spinal cord injury].
Chronic lung disease such as chronic obstructive pulmonary disease [COPD] and cystic fibrosis Heart disease such as congenital heart disease, congestive heart failure and coronary artery disease Blood disorders such as sickle cell disease Endocrine disorders such as diabetes mellitus Kidney disorders Liver disorders Metabolic disorders such as inherited metabolic disorders and mitochondrial disorders Weakened immune system due to disease or medication such as people with HIV or AIDS, or cancer , or those on chronic steroids People younger than 19 years of age who are receiving long-term aspirin therapy The Advisory Committee on Immunization Practices ACIP has issued separate recommendations on Who Should Get Vaccinated Against Seasonal Flu.
In children Fast breathing or trouble breathing Bluish skin color Not drinking enough fluids Not waking up or not interacting Being so irritable that the child does not want to be held Flu-like symptoms improve but then return with fever and worse cough Fever with a rash In adults Difficulty breathing or shortness of breath Pain or pressure in the chest or abdomen Sudden dizziness Confusion Severe or persistent vomiting Flu-like symptoms improve but then return with fever and worse cough Do I need to go to the emergency room if I am only a little sick?
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