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Coronavirus: the order of appearance of symptoms identified by researchers

According to an American study published in the scientific journal Frontiers in Public Health, relayed by the Voix du Nord, researchers have identified the order of appearance of symptoms of Covid-19 in the majority of patients.

TGoosebumps and fever are among the main symptoms of coronavirus, recalls Northern voice. Today, it is the order in which symptoms appear that interests scientists. Data that could prove useful in differentiating patients with Covid-19 from those with influenza this fall, for example. “We hypothesize that the order of appearance of symptoms could help patients and healthcare professionals to diagnose and distinguish Covid-19 more quickly from other respiratory diseases”, indicate the American researchers from the University of Southern California who published the results of their study in the scientific journal Frontiers in Public Health.

They studied the cases of nearly 56,000 Chinese patients affected by Covid-19 (cases all collected by the World Health Organization) in February 2020. The researchers compared the symptoms caused by the coronavirus to 2,500 cases of influenza reported by European and American health authorities from 1994 to 1998, and symptoms of two other coronavirus diseases, SARS (severe acute respiratory syndrome) and Mers (Middle East respiratory syndrome). As a result, they put forward a diagram and established the order of appearance of the symptoms of the new coronavirus, explains the Voix du Nord. The objective of this study is therefore to help differentiate Covid-19 from other infectious diseases.

Scientists have chosen to focus on certain “easily discernible or objective” symptoms thus excluding reported symptoms such as loss of taste and / or smell. The results of the study make it possible to draw up a list of the signs of a coronavirus infection in chronological order. Scientists warn of how symptoms can vary from person to person, pointing out that some patients with Covid-19 are asymptomatic.

The order of appearance of symptoms of Covid-19 according to this study:

1. Fever

2. Cough

3. Muscle pain, headache, throat pain

4. Nausea and / or vomiting

5. Diarrhea

The order of appearance of flu symptoms:

1. Cough or muscle pain

2. Headache

3. Sore throat

4. Fever

5. Nausea and / or vomiting and diarrhea


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