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A Korean study published last week found no loss of smell or taste, except in 15.7% of the 2,300 patients who were mildly affected by the epidemic or who had no symptoms.
It also indicates that the average time period within which it disappears is 7 days and can last up to 40 days.
The study also indicated that the frequency of symptoms varies by age and sex.
Young patients have symptoms related to the ear, nose, and throat, while the elderly often complain of fatigue, fever, and loss of appetite.
Men more often cough, have a fever, and women with loss of smell, headache, and stuffy nose.
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And it registered the European continent, as of Wednesday night, 160 thousand and 846 deaths, between a million and 802 thousand and 322 cases so far with the virus called “the enemy of humanity”.
Headache and olfactory loss are the most common symptoms among European Covid-19 patients with mild to moderate symptoms, while the virus has also been shown to take different forms, depending on age or gender.
The “Journal of Internal Medicine” study, which included more than 1,400 people who were confirmed as a result of the exam, found that seven out of 10 patients had headaches and lost their sense of smell.
And other more common symptoms. Nasal obstruction (67.8%), cough (63.2%), fatigue (63.3%), muscle pain (62.5%), runny nose (60.1%) and loss of taste (54, 2%)
Only half of the patients (45.4%) had a fever.
The International Federation of Doctors of Doctors “Ear, Nose and Throat” launched this first epidemiological study in European patients who suffered a slight injury with Covid-19, to assess the rate of symptoms of loss of smell and taste, of which some complained since the outbreak on the European continent.
Preliminary results published in early April showed the percentage of these symptoms, which studies in Asia have rarely mentioned.
The full study, which included 5 European countries (Italy, France, Belgium, Spain and Switzerland) confirms that the loss of the sense of smell is “one of the symptoms” of Covid-19, and not just the result of a stuffy nose .
It also indicates that this phenomenon lasts at least a week after recovery, in more than a third of patients (37.5%).
“Covid-19’s ability to attack the sense of smell, and therefore the central nervous system, may be a thread” to explain its loss, Fuch Hospital said in a statement.
The epidemiological investigation involving a thousand sailors from the aircraft carrier “Charles de Gaulle” infected with Covid-19, results published on Wednesday, that loss of sense of smell (57.4%), headache (56.7%) and loss of taste ( 46.4%) are among the main symptoms of the above, followed by fatigue (46.3%), muscle pain (45.2%) and fever (44.8%).
However, loss of sense of smell and taste was rarely reported in studies of Chinese patients who mainly complained of fever, cough, and shortness of breath as symptoms of Covid-19.
And research by the International Federation of Physicians for “Otorhinolaryngology” suggests that this discrepancy may explain why Chinese studies included patients treated at the hospital, with more serious injuries.
It also assumes that a genetic mutation of the emerging corona virus may be behind the asymmetry of symptoms.
A Korean study published last week found no loss of smell or taste, except in 15.7% of the 2,300 patients who were mildly affected by the epidemic or who had no symptoms.
It also indicates that the average time period within which it disappears is 7 days and can last up to 40 days.
The study also indicated that the frequency of symptoms varies by age and sex.
Young patients have symptoms related to the ear, nose, and throat, while the elderly often complain of fatigue, fever, and loss of appetite.
Men more often cough, have a fever, and women with loss of smell, headache, and stuffy nose.
