infections
COVID 19
Symptoms of COVID 19
Symptoms vary in people with COVID-19 and may include the following: Fever Cough Sore throat Congestion or runny nose Shortness of breath or difficulty breathing Chills or repeated shaking with chills New loss of smell or taste Fatigue Muscle pain Headache Nausea or vomiting Diarrhea If people develop symptoms, they usually appear about 2 to 10 days (incubation period) after being infected. For the Omicron variant, symptoms usually appear in only 2 to 4 days. Many infected people have no symptoms or have only mild disease. The risk of serious disease and death in people with COVID-19 increases With age In people who smoke or previously smoked In people with other serious medical disorders, such as cancer or chronic heart, lung, kidney, or liver disease, sickle cell disease, diabetes, obesity, or immunocompromising disorders For all age groups, risk of serious disease and death decreases in people who are COVID-19 Vaccine . (Also see In addition to respiratory disease that can be severe and lead to death, other serious complications include Heart disorders including Overview of Abnormal Heart Rhythms , heart muscle disorders, and acute heart injury Overview of Blood Clotting Disorders including blood clots in small and large blood vessels as well as bleeding Guillain-Barré Syndrome (GBS) (rare) A rare complication called multisystem inflammatory syndrome in children (MIS-C) that may be linked to COVID-19 has been reported in children. Symptoms of this can be similar to the rare condition Kawasaki Disease and include fever, abdominal pain, and rash. Vaccination helps protect against developing MIS-C. A similar complication has been reported in young and middle-aged adults (multisystem inflammatory syndrome in adults [MIS-A]). In most people, symptoms resolve over about a week. However, in some people, symptoms last longer, sometimes with shortness of breath, cough, and extreme fatigue, and persisting for weeks. Prolonged illness appears to be more common in those who originally had severe disease, but even people with mild illness may have persistent symptoms. In 25 to 50% of people with COVID-19, symptoms last for months. This has been referred to by many names, including long COVID, long-haul COVID, and post-acute COVID-19 syndrome or condition. 