Symptoms may appear or worsen after physical or mental activity. Symptoms of “long COVID” can include fatigue, difficulty thinking or concentrating (so-called “brain fog”), headache, change in or loss of taste or smell, dizziness, heart palpitations, chest pain, shortness of breath, cough, joint or muscle pain, anxiety, depression, sleep problems, feelings like “pins and needles,” diarrhea or stomach pain, rash, changes in menstrual cycle or fever. While it is not known why this syndrome develops, it is important to realize that SARS-CoV-2 can infect various types of cells, which means that individuals who develop MIS-C or MIS-A may experience symptoms related to the heart, blood, lungs, kidneys, eyes, stomach, intestines, or skin.Īdditionally, some people are experiencing side effects for long periods after infection (months). Symptoms may include fever, abdominal pain, vomiting, diarrhea, rash, pink eye, fatigue, neck pain, or headache.
The condition develops a few weeks after infection (up to 6 weeks) at a time when individuals no longer test positive for SARS-CoV-2. This syndrome can occur in anyone who was infected with COVID-19, including people who had minimal or no symptoms during infection. Adults might suffer a similar problem called MIS-A. Some children and adults experience a delayed onset of symptoms called multisystem inflammatory syndrome (MIS-C). However, all people, regardless of age or underlying conditions, can experience severe COVID-19 disease. Some groups of people, including those over 65 years of age, pregnant women, and individuals with high blood pressure, chronic heart and lung disorders, diabetes and obesity are at a greater risk of developing severe disease.
Rash or discoloration of fingers or toes.But a significant number of infected people develop severe symptoms that can result in weeks of illness, hospitalization or death. Most people have mild symptoms, similar to those of a cold. Some people never have symptoms or know they were infected. SARS-CoV-2 infections lead to a wide range of disease experiences and symptoms. The most successful variants of a virus tend to be those that either improve the virus’s ability to spread or allow the virus to evade the immune response generated by vaccination. Since that time, the virus has continued to change, creating “variants,” or versions, of the original virus that have genetic differences. In March 2020, the World Health Organization determined that the spread was worldwide and declared a COVID-19 pandemic. These new capabilities set the stage for a global epidemic, called a pandemic. Second, it could easily spread from one person to another. This new virus developed when a bat coronavirus infected another animal, which has yet to be identified, and changed in a way that enabled it to gain two important capabilities. SARS-CoV-2 was first identified in China in late 2019. Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a virus that causes coronavirus disease 2019 (COVID-19). View a list of questions submitted by readers on our companion webpage at .Ĭlick here to view a full-size image of the infographic. In the U.S., this review was completed by independent experts advising both the Food and Drug Administration (FDA) and the Centers for Disease Control and Prevention (CDC). The results of these studies were carefully reviewed to ensure their safety. The speed with which COVID-19 vaccines were made was due to the dedication of massive financial and human resources, including clinical trials involving tens of thousands of participants. The spike protein is responsible for attaching the virus to cells. By the end of 2020, vaccines targeting the coronavirus spike protein became available in the U.S. With that information in hand, it was now possible to make a vaccine to prevent it. By January 2020, the virus had been isolated and its genetic sequence defined. View larger image SARS-CoV-2, a bat coronavirus, made its debut in the human population in November 2019.
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