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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]
The terms "intrinsic incubation period" and "extrinsic incubation period" are used in vector-borne diseases. The intrinsic incubation period is the time taken by an organism to complete its development in the definitive host. The extrinsic incubation period is the time taken by an organism to develop in the intermediate host. [citation needed]
As is common with infections, there is a delay, or incubation period, between the moment a person first becomes infected and the appearance of the first symptoms. The median delay for COVID-19 is four to five days [17] possibly being infectious on 1–4 of those days. [18]
Its symptoms include cough, fever, nasal congestion, and fatigue, with an incubation period of three to six days. Unlike Covid-19, there is no vaccine or specific antiviral treatment for HMPV ...
Understanding this incubation period—the time between when a virus enters a person’s body and when they start feeling sick—is crucial for health officials. COVID-19 symptoms typically appear ...
COVID symptoms are similar to those of flu, ... Could you have COVID? Symptoms to watch for in 2025 include sore throat and fatigue. Lindsey Leake. Updated January 10, 2025 at 5:02 PM.
(February 2025) (Learn how and when ... Coronavirus disease 2019 (COVID-19) ... As is common with infections, there is a delay, or incubation period, ...
BA.2.86 was first reported by Denmark and Israel. [1] [11] On 18 August 2023, when only six cases had been reported from four countries (Denmark, Israel, the United Kingdom and the United States), the British healthcare authorities noted that its almost simultaneous appearance in several countries still operating detailed genomic surveillance indicated that it likely already was spreading more ...