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Symptoms of COVID-19. Some less common symptoms of COVID-19 can be relatively non-specific; however the most common symptoms are fever, dry cough, and loss of taste and smell. [1] [22] Among those who develop symptoms, approximately one in five may become more seriously ill and have difficulty in breathing.
The timeline of the COVID-19 pandemic lists the articles containing the chronology and epidemiology of SARS-CoV-2, [1] the virus that causes the coronavirus disease 2019 and is responsible for the COVID-19 pandemic. The first human cases of COVID-19 occurred in Wuhan, People's Republic of China, on or about 17 November 2019. [2]
However, as the COVID-19 pandemic rapidly evolves and the scientific community’s understanding of the novel coronavirus develops, some of the information may have changed since it was last updated.
On 9 March, the first COVID-19 deaths in Germany, an 89-year-old woman in Essen and a 78-year-old man in Heinsberg, were reported. [8] By the evening of 10 March, the count of cases in the state rose to 648. [137] All mass events in North Rhine-Westphalia with more than 1000 participants were banned with immediate effect. [138]
The side effects of newly discovered COVID-19 strain XEC might not be as severe, but is part of the more contagious variant class, experts say.. The Centers for Disease Control and Prevention (CDC ...
COVID-19 symptoms range from asymptomatic to deadly, but most commonly include fever, sore throat, nocturnal cough, and fatigue. Transmission of the virus is often through airborne particles. Mutations have produced many strains (variants) with varying degrees of infectivity and virulence. [9]
However, the COVID-19 of 2023 isn't the same as the COVID-19 of 2019 and 2020—the variant that uprooted our lives. Doctors share that the disease has evolved and so has population immunity.
Scanning electron micrograph of SARS virions. Severe acute respiratory syndrome (SARS) is the disease caused by SARS-CoV-1. It causes an often severe illness and is marked initially by systemic symptoms of muscle pain, headache, and fever, followed in 2–14 days by the onset of respiratory symptoms, [13] mainly cough, dyspnea, and pneumonia.