Coronavirus disease 2019 (COVID-19) - Symptoms and causes
Most people with COVID-19 have mild to moderate symptoms. But COVID-19 can cause serious medical complications and lead to death. Older adults or people who already have medical conditions are at greater risk of serious illness. COVID-19 may be a mild, moderate, severe or critical illness. In broad terms, mild COVID-19 doesn't affect the ...
Long COVID: Lasting effects of COVID-19 - Mayo Clinic
Aug 23, 2024 · Long COVID symptoms may come and go or be constant. They also can start any time after you had COVID-19. But symptoms still need to be documented for at least three months in order for a health care professional to diagnose long COVID. Healthcare professionals may treat your symptoms or conditions before a long COVID-19 diagnosis.
COVID-19, cold, allergies and the flu: What are the differences?
Nov 27, 2024 · COVID-19 symptoms usually start 2 to 14 days after exposure to SARS-CoV-2. Flu symptoms usually appear about 1 to 4 days after exposure to an influenza virus. COVID-19 can cause more-serious illnesses in some people than can the flu. Also, COVID-19 can cause different complications from those of the flu.
Unusual COVID-19 symptoms: What are they? - Mayo Clinic
Jun 13, 2024 · Symptoms of COVID-19, also known as coronavirus disease 2019, can vary widely. And over time, how often people have a COVID-19 symptom may change. Symptoms may depend on how the virus that causes COVID-19 changes, and on the people the virus infects. Many people with COVID-19 have no symptoms or mild illness.
Coronavirus disease 2019 (COVID-19) - Mayo Clinic
Here are some guidelines for when to take a COVID-19 test: If you have COVID-19 symptoms, test for the illness right away. If you were exposed to the COVID-19 virus but don't have symptoms, wait at least five days after exposure then test. If you have symptoms and tested positive for COVID-19 within the last 30 days, you can test again. But if ...
COVID-19 vs. flu: Similarities and differences - Mayo Clinic
Jul 22, 2023 · COVID-19 symptoms generally appear 2 to 14 days after exposure. Flu symptoms usually appear about 1 to 4 days after exposure. COVID-19 and flu spread and severity. COVID-19 appears to be contagious for a longer time and to spread more quickly than the flu. With COVID-19, you may be more likely to experience loss of taste or smell.
COVID-19 in babies and children - Mayo Clinic
Children with COVID-19 may have serious or mild symptoms or no symptoms at all. Symptoms may show up from 2 to 14 days after contact with the virus that causes COVID-19. The most common symptoms are fever and a cough, including a barking cough linked to croup.
COVID-19: Who's at higher risk of serious symptoms?
Apr 30, 2024 · The risk of serious COVID-19 illness also is higher for people who have conditions that damage lung tissue over time. Examples are tuberculosis, cystic fibrosis, interstitial lung disease, bronchiectasis or COPD, which stands for chronic obstructive pulmonary disease. These diseases raise the risk of needing care in the hospital for COVID-19.
COVID-19 variants: What's the concern? - Mayo Clinic
Jun 21, 2024 · Make medicine used to prevent or treat COVID-19 stop working or not work as well. If a mutation changes how a virus acts in a group of people, it's called a variant. Scientists across the world track the changes in the virus variants that cause COVID-19 .
Respiratory syncytial virus (RSV) - Symptoms & causes - Mayo Clinic
Oct 4, 2023 · Because RSV and coronavirus disease 2019 (COVID-19) are both types of respiratory viruses, some symptoms of RSV and coronavirus disease 2019 (COVID-19) can be similar. In children, COVID-19 often results in mild symptoms such as fever, runny nose and cough. For adults with COVID-19, symptoms may be …