For seasonal influenza by RKI case definition fever above 38.5 degrees Celsius is the main symptom. Accompanying symptoms include cough, muscle aches, runny nose and nausea.

They cheer feverishly in a feverish dream, sweating, restless wallow in their down feather bed back and forth? They make your eyes and look at your ruffled feathers? Either they are now-read chicken or a reading Gockel, or you are reading as influenza human host rather general flu symptoms of bird flu of the chicken-type influenza A (H5N1): After the RKI guide for doctors at the Robert Koch Institute (RKI), our doctors distinguish now between the avian influenza ( bird flu ), the pandemic influenza A (H1N1) 2009 ( swine flu ) and the seasonal flu – here circulating seasonal influenza virus subtype A (H1N1), A (H3N2) and subtype B ( Here you will find the cases of flu updates of AGI for Germany on January 18, 2013 , here is the update from Euro Flu for Europe).

Fever over 38.5 degrees Celsius is a flu symptom

A sudden onset with fever of at least 38.5 degrees Celsius is the main symptom of typical influenza symptoms (ILI) of seasonal influenza (ILI: influenza-like illness). As for the swine flu , the so-called incubation period of seasonal influenza 1 to 2 days – with bird flu, the incubation period probably longer. The sudden fever is against the common cold is one of the main symptoms: According to a study by Arnold S. Monto of 2000 in influenza disease occurs fever of 37.8 degrees Celsius to just under 70 percent of all flu patients. However occurs fever over 37.8 degrees Celsius in a normal cold only about 40 percent of patients. A feverish feeling chills as occurs for colds and flu, however at about 90 percent of all patients was equal. The clinical picture of swine flu, a study of 642 confirmed swine flu cases in the U.S. that even 94 percent of all patients had fever.


Other flu symptoms are cough or dry cough

Cough or dry cough is the clinical picture of the flu as an additional diagnostic criterion for diagnosis. On the basis of cough, hoarseness, or a dry throat can not be reliably distinguished from a flu or a cold. at 93 percent of all flu patients and as cold symptoms in about 80 percent of all patients. In children, it can cause croup – including difficulty breathing or shortness of breath are not safe criteria for the flu.

Also, headache and muscle aches are part of the flu symptoms

Sometimes additionally plagued headache and muscle pain ill people. The so-called myalgia occur as muscle pain often on the back, but also to legs or arms. Again, these symptoms are non-specific for the flu. According Monto both symptoms occur with approximately equal frequency in patients with flu and common cold patients. About 90 percent of patients suffer from headache, muscle pain as much as 94 percent.

Other flu symptoms: general weakness, cold sweats &

Flu sick chickens show a temporary decrease egg production, flu-sick people show performance degradation as more non-specific flu-like symptoms such as general weakness and lassitude, sore throat, runny nose (rhinorrhea), sweating, and nausea with vomiting and diarrhea . Ill older people, there are sometimes complications, as older people are often already ill at the so-called chronic underlying diseases. They suffer from chronic heart disease, for example, or lung disease. Some also have diabetes or a weak immune system. Here the doctors must pay particular attention to pneumonia, as these are often caused by a bacterial super infection with staphylococci.

The flu lasts about a week with no complications

Runs the uncomplicated influenza, our healthy immune system with the seasonal influenza viruses in about 5 to 7 days is finished. During this time you can with appropriate medications to support the self-healing powers of the body and relieve annoying attendant symptoms such as runny nose. Here, the disease can be quite variable. A rule of thumb for the RKI that about a third of flu running feverishly one third of patients suffer only mild symptoms – such happy chickens however show about a third of all people a so-called asymptomatic illness without flu symptoms.