COVID

Coronavirus disease 2019 is a contagious disease caused by severe acute respiratory syndrome coronavirus 2. The first case was identified in Wuhan, China, in December 2019. The disease has since spread worldwide, leading to an ongoing pandemic. Symptoms of COVID-19 are variable, but often include fever, cough, fatigue, breathing difficulties, and loss of smell and taste. Symptoms may begin one to fourteen days after exposure to the virus. At least a third of people who are infected do not develop noticeable symptoms. Of those people who develop noticeable symptoms, most develop mild to moderate symptoms, while 14% develop severe symptoms, and 5% suffer critical symptoms. Older people are more likely to have severe symptoms. Some people continue to experience a range of effects—known as long COVID—for months after recovery, and damage to organs has been observed. Multi-year studies are underway to further investigate the long-term effects of the disease.

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C.D.C. Shortens Isolation Period for People With Covid

Long Covid May Lead to Measurable Cognitive Decline, Study Finds

Underlying cause of 'brain fog' linked with long COVID discovered

Long COVID Seems to Be a Brain Injury, Scientists Discover

C.D.C. Considers Ending 5-Day Isolation Period for Covid

Scientists make COVID receptor protein in mouse cells

Complement system causes cell damage in long Covid

Chinese researchers claim to have “cloned” a COVID-like virus mutation that showed a 100% mortality rate in mice, acknowledges 'spillover' risk to humans

COVID shots protect against COVID-related strokes, heart attacks, study finds

Four cold-causing coronaviruses may provide clues to COVID’s future

Covid Has Resurged, but Scientists See a Diminished Threat

Spike in premature births caused by COVID, halted by vaccines, study finds

Long covid: What we now know about its causes and possible treatments

COVID Caused a Baby Bump when Experts Expected a Drop. Here's Why

One in five patients experience rebound COVID after taking Paxlovid, new study finds

Could a Special Diet Alleviate Long COVID?

Scientists discover 'long colds' may exist, as well as long Covid

An mRNA Pioneer Discusses How Her Work Led to the COVID Vaccines

Has the risk of getting long covid been overestimated?

Covid boosters: Why are US and UK vaccine policies so different?