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Other symptoms are less common among people with COVID-19. Some people experience gastrointestinal symptoms such as loss of appetite, diarrhea, nausea or vomiting. [1] [65] A June 2020 systematic review reported a 8–12% prevalence of diarrhea, and 3–10% for nausea. [2] Less common symptoms include chills, coughing out blood, diarrhea, and rash.
It is difficult to distinguish between symptoms caused by infection of the HCoV-NL63 virus and those caused by other common human viruses, making diagnosis and detection complex. Reverse transcription polymerase chain reaction of samples collected through nasopharyngeal swab is the most commonly used method for detection of the virus. [ 10 ]
But Russo says that XEC doesn’t have any major symptoms that are different from previous version of COVID-19. According to the CDC, symptoms may include: Fever or chills. Cough.
Post-acute infection syndromes (PAISs) or post-infectious syndromes are medical conditions characterized by symptoms attributed to a prior infection. While it is commonly assumed that people either recover or die from infections, long-term symptoms—or sequelae —are a possible outcome as well. [ 1 ]
The new "FLiRT" COVID-19 variants, including KP.3 and KP.2, are spreading in the United States. Will there be a summer surge? Experts discuss transmission, symptoms, and vaccines.
Yale researchers have found clues as to why certain people experience adverse health effects after the COVID-19 vaccine, which they have dubbed “post-vaccination syndrome."
People who experience a larger number of symptoms during the acute infection are more likely to develop long COVID, as well as people who require hospitalisation. [ 4 ] In children and young people, the risk factors for long COVID include female sex, older age, and pre-existing diseases or mental health problems.
In humans and birds, the group of viruses cause respiratory tract infections that can range from mild to lethal. Mild illnesses in humans include some cases of the common cold (which is also caused by other viruses, predominantly rhinoviruses ), [ 1 ] [ 2 ] while more lethal varieties can cause SARS , MERS and COVID-19 .