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For some, COVID-19 symptoms may persist weeks to months after the initial infection. In 2022, 6.9% of US adults reported to have experienced long COVID, according to a CDC survey .
What are the COVID symptoms to look for in 2024? ... Muscle or body aches. Headache. Nausea or vomiting. Diarrhea “These variants still have the potential to cause severe disease,” Russo says.
Symptoms of COVID-19. Some less common symptoms of COVID-19 can be relatively non-specific; however the most common symptoms are fever, dry cough, and loss of taste and smell. [1] [22] Among those who develop symptoms, approximately one in five may become more seriously ill and have difficulty in breathing.
This means staying home if you test positive for the virus—though isolation guidelines have changed quite a bit since SARS-CoV-2, the virus that causes illness with Covid-19, first emerged.
Imaging of brains show changes after COVID infection, even if this has not been studied in relation to long COVID. For instance, some show a smaller olfactory bulb, a brain region associated with smell. [2] In a subset of people with long COVID, there is evidence that SARS-COV-2 remains in the body after the acute infection. [47]
People should test if they have COVID-19 symptoms or an exposure. It's also a good idea to test ahead of big events or gatherings where you'll be around high-risk individuals, says Schaffner.
In COVID-19, the arterial and general tissue oxygen levels can drop without any initial warning.The chest x-ray may show diffuse pneumonia.Cases of silent hypoxia with COVID-19 have been reported for patients who did not experience shortness of breath or coughing until their oxygen levels had depressed to such a degree that they were at risk of acute respiratory distress (ARDS) and organ failure.
The researchers estimated that, in a group of 10,000 people who catch COVID-19 and will develop symptoms, about 101 would start showing symptoms after health officials had ceased monitoring them.