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a) Common Symptoms
b) Signs and Risks
Although the virus is deposited in the respiratory tract, signs and symptoms can be observed and detected throughout the entire body. Contrary to common belief, Influenza is actually pathologically distinct from diseases like the common cold or the stomach flu. Both stated diseases are often confused with the ”°flu”±, which is incorrect. The range of severity of the symptoms of flu is wide and can be mild rhinitis at one end, to even fatal pneumonia at the other.
Some common signs and symptoms of flu are:
When symptoms first appear, constitutional symptoms would seem more severe then respiratory symptoms. However, when the former subsides, respiratory symptoms become more evident.
Typical signs and symptoms of flu in adults include an abrupt onset of symptoms within 2 to 4 days of incubation of the virus. These symptoms include fever which surpasses 37.8 ”ć C that peaks within the first day. This will continue on for about another 4 days. Other symptoms include dry cough, headaches, chills, sweating, sore throat, myalgia, malaise and anorexia. One key differentiating factor of influenza infection from other common respiratory illnesses is that symptoms of malaise would severe and persists for several days. Other symptoms may include muscle fatigue, photophobia and other general distresses like abdominal pains and nausea. As for children, they experience relatively the same type of symptoms except that abdominal distress and myalgia appear more frequently. Their maximum temperature may also be higher, indicating febrile convulsions. Symptoms such as headaches and malaise are usually difficult for children to verbalize and express and may have occurred earlier than they first appeared. Fever and rhinitis are common in children of ages less than 5. In very young infants, rhinitis might be the only respiratory symptom.
In comparison to adults or teenagers, patients in the lower age groups usually tend to experience more of vomiting or diarrhoea. These symptoms nevertheless can be easily detected. However, symptoms such as malaise or myalgia are more difficult to identify in children if present.
c) Flu vs Cold Symptoms
d) Reported Symptoms Of Avian InfluenzaReported symptoms of Avian Influenza in human subjects ranged from typical influenza symptoms as mentioned above, to eye infections (conjunctivitis), severe pneumonia and respiratory diseases such as viral pneumonia, acute respiratory disorder and other possibly fatal complications. The symptoms of Avian Influenza depend on what type of virus caused the infection.
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