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An epidemic is the rapid spread of disease to a large number of people in a given population within a short period of time; in meningococcal infections, an attack rate in excess of 15 cases per 100,000 people for two consecutive weeks is considered an epidemic. [1]
At the beginning of March 2022, South Korea joined the list of 30 most affected countries on the first anniversary of the day when it overtook China in terms of the number of cases. As of 3 February 2025, France is the most affected country in Europe , while Germany is the second most affected country and the United Kingdom the third most ...
[b] The COVID-19 pandemic also saw the emergence of misinformation and conspiracy theories, [39] and highlighted weaknesses in the U.S. public health system. [17] [40] [41] In the United States, there have been 103,436,829 [3] confirmed cases of COVID-19 with 1,212,505 [3] confirmed deaths, the most of any country, and the 17th highest per ...
The figures presented are based on reported cases and deaths. While in several high-income countries the ratio of total estimated cases and deaths to reported cases and deaths is low and close to 1, for some countries it may be more than 10 [7] or even more than 100. [8] Implementation of COVID-19 surveillance methods varies widely. [9]
The outbreak evolved into a severe pandemic over the course of the year, with extremely rapid growth in cases after that point. [1] In addition to those 24 cases known by the end of February, this list includes three cases which were confirmed later by phylogenetic analysis and post-mortems for a total of 27 cases.
Before the pandemic, cases would show up in late summer in an every-other-year pattern. Had that pattern continued during Covid, doctors would have expected a rise in 2021. That did not occur.
Friday marks five years since the COVID-19 virus was declared a public health emergency by the United States. But five years later, the virus is still killing thousands, according to experts. "One ...
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]