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COVID-19 is the disease caused by SARS-CoV-2, the coronavirus that emerged in December 2019. COVID-19 can be severe, and has caused millions of deaths around the world as well as lasting health problems in some who have survived the illness.
There are three general phases of infection with SARS-Cov-2, the coronavirus that causes COVID-19. Incubation period. This is the time between getting infected and when symptoms appear. In general, you may see symptoms start two to 14 days after infection.
People with long COVID, or “long-haulers,” are COVID-19 survivors but they have persistent symptoms such as shortness of breath, fatigue, headaches, palpitations, and impairments in mental health and cognition.
The COVID-19 vaccine lessens the severity of COVID-19 by teaching the immune system to recognize and fight the virus that causes the disease. The 2024–25 COVID-19 vaccine is updated to better protect against variants that are currently spreading.
What does COVID do to lungs? COVID-19 can cause lung complications such as pneumonia and, in the most severe cases, acute respiratory distress syndrome, or ARDS. Sepsis , another possible complication of COVID-19, can also cause lasting harm to the lungs and other organs.
The coronavirus pandemic is making everyone aware of handwashing and protecting others from coughs and sneezes. Along with those essential steps, practices such as social and physical distancing, and self-quarantine and isolation when appropriate can slow the rate of infection in a city, town or community.
There are hundreds of coronaviruses, and some of them cause disease in humans, such as mild colds and more serious illnesses or death. The SARS-CoV-2 coronavirus, along with those that cause SARS and MERS are examples of coronaviruses that can cause serious illness in people.
What are the types of coronavirus tests? There are two basic types of tests for COVID-19. Viral test: This test can tell you if you are currently infected with the coronavirus. A swab is placed in the nose or mouth to gather samples.
Doctors who are not familiar with POTS may dismiss these symptoms as lingering effects of COVID-19 — or even psychological symptoms. At the same time, POTS can be very debilitating and requires specific treatment, so an accurate diagnosis is vital.
Alpha, beta, gamma, delta and omicron variants of the SARS-CoV-2 coronavirus are classified as variants of concern. A variant of high consequence is a variant for which current vaccines do not offer protection. As of now, there are no SARS-CoV-2 variants of high consequence.