Health
Key symptoms of COVID-19 evolved in Omicron
For nearly three years, the world has watched the coronavirus behind the COVID-19 pandemic evolve into many subspecies, but vaccination and previous infections have changed our experience with the disease. did.
Over time, the main symptoms of COVID-19 have also changed.
Based in the UK as of 20th October Zoe Health Survey (previous COVID Symptom Study) identified the most common current COVID-19 symptoms based on information from: Over 4 million A person who uses a special app to report signs of infection.
According to the latest analysis, symptoms of infection with common omicron variants are often influenza-like and depend on immunization status and number of vaccinations.
Some coronavirus symptoms that predominated in previous variants, such as Delta, now rank lower on the list. . loss of sense of smell (such as causing a metallic taste in the mouth, among other sensory changes caused by COVID-19), difficulty breathingand fever.
The study found that vaccinated people reported fewer symptoms in a shorter period of time, suggesting they were less seriously ill and recovered more quickly.
A study by researchers from King’s College, London, Massachusetts General Hospital, Boston, Harvard University, and Stanford University, California, classified the main symptoms in people who received one or two doses of the vaccine (booster effects are not taken into account). people who have not been vaccinated.
Main COVID-19 symptoms in people who received two doses of vaccine
- sore throat
- runny nose
- Nasal congestion
- persistent cough
- headache
The researchers added that people who tested positive for COVID-19 after being vaccinated were more likely to report sneezing. If you start coming out frequently, especially if you live or work near people who are at high risk for the disease, you should get a COVID test,” wrote Zoe’s editorial staff.
Most common COVID-19 symptoms among those who received 1 dose of vaccine
- headache
- runny nose
- sore throat
- sneeze
- sustainably cough
Zoe’s editors noted that persistent coughing was one of the first indicators of COVID-19, but it ranks lower than sneezing and runny nose, which were previously thought to be unrelated to infection.
Main symptoms of COVID-19 in unvaccinated people
- headache
- sore throat
- runny nose
- heat
- persistent cough
Loss of smell in the unvaccinated was ranked ninth in the study, while shortness of breath was all the way down to number 30 on the list.
Why have the main symptoms of COVID-19 changed?
“While it’s not entirely clear why this change in symptoms is occurring, Zoe’s data is consistent with what many clinicians see in their patients. COVID-19 infection Over the past few months,” he said. Dean Winslow, MDis an infectious disease expert and professor of medicine at Stanford University.
Dr Winslow said the reason for the change in symptoms is likely “multifactorial” and includes the ability of the virus to evolve to maximize transmission and higher levels of immunity within the population due to vaccination and previous infections. It is explained that
You may think it’s a cold or the flu, not COVID-19
Winslow warns: Omicron symptoms tend to resemble those of a cold or the flu., people may not suspect they have COVID-19. “Even mild common cold-like symptoms can be caused by COVID-19, so if you experience even mild respiratory symptoms, you should get tested for the virus,” he said. says.
Winslow stressed that the pandemic is not over yet and that people should avoid crowded indoor environments and consider wearing a mask in those situations to avoid being infected. .
He adds that these measures also provide protection against other bacteria, such as influenza and flu-causing bacteria. respiratory syncytial virus (RSV) and Actively spreading.
“Also get a new bivalent COVID-19 booster this fall,” says Winslow. “Although it may not be possible to completely protect against infection with some viruses, new omicron subvariantit helps protect against serious illness, hospitalization, and death.
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