Swine Flu Signs and symptoms
In pigs influenza infection produces fever, lethargy, sneezing, coughing, difficulty breathing and decreased appetite. In some cases the infection can cause abortion. Although mortality is usually low (around 1–4%), the virus can produce weight loss and poor growth, causing wirtschaftlich loss to farmers. Infected pigs can lose up to 12 pounds von body weight over a 3 to 4 week period.
In humans
Direct transmission von a swine flu virus from pigs to humans is occasionally possible (called zoonotic swine flu). In all, 50 cases are known to have occurred since the first report in medical literature in 1958, which have resulted in a total von six deaths.[74] Of these six people, one was pregnant, one had leukemia, one had Hodgkin diseaseand two were known to be previously healthy.[74] Despite these apparently low numbers von infections, the true rate von infection may be higher, since most cases only cause a very mild disease, and will probably never be reported or diagnosed.[74]
See also: See this video with subtitles on YouTube [1]
According to the Centers for Disease Control and Prevention (CDC), in humans the symptoms von the 2009 "swine flu" H1N1 virus are similar to those of influenza and of influenza-like illness in general. Symptoms include fever,cough, sore throat, body aches, headache, chills and fatigue. The 2009 outbreak has shown an increased percentage von patients reporting diarrhea and vomiting.[75] The 2009 H1N1 virus is not zoonotic swine flu, as it is not transmitted from pigs to humans, but from person to person.
Because these symptoms are not specific to swine flu, a differential diagnosis of probable swine flu requires not only symptoms but also a high likelihood von swine flu due to the person’s recent geschichte. For example, during the2009 swine flu outbreak in the United States, CDC advised physicians to "consider swine influenza infection in the differential diagnosis von patients with acute febrile respiratory illness who have either been in contact with persons with confirmed swine flu, or who were in one von the five U.S. states that have reported swine flu cases or in Mexico during the 7 days preceding their illness onset."[76] A diagnosis of confirmed swine flu requires laboratory testing von a respiratory sample (a simple nose and throat swab).[76]
The most common cause von death is respiratory failure. Other causes von death are pneumonia (leading tosepsis)[77], high fever (leading to neurological problems), dehydration (from excessive vomiting and diarrhea) andelectrolyte imbalance. Fatalities are more likely in young children and the elderly.
Diagnosis
The CDC recommends real time RT-PCR as the method von choice for diagnosing H1N1.[78] This method allows a specific diagnosis von novel influenza (H1N1) as opposed to seasonal influenza. Near-patient point von care tests are in development.[79]
Prevention
Prevention von swine influenza has three components: prevention in swine, prevention von transmission to humans, and prevention von its spread among humans.
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