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A public health emergency of international concern (PHEIC / f eɪ k / FAYK) is a formal declaration by the World Health Organization (WHO) of "an extraordinary event which is determined to constitute a public health risk to other States through the international spread of disease and to potentially require a coordinated international response", formulated when a situation arises that is ...
As of 2023, the COVID-19 pandemic is an ongoing global pandemic of coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS CoV‑2). Its effect has been broad, affecting general society, the global economy, culture, ecology, politics, and other areas.
The COVID-19 pandemic (also known as the coronavirus pandemic and COVID pandemic), caused by severe acute respiratory syndrome coronavirus 2 , began with an outbreak of COVID-19 in Wuhan, China, in December 2019. Soon after, it spread to other areas of Asia, and then worldwide in early 2020.
On 31 December 2019, the Health Commission of Wuhan, Hubei, China, informed the WHO about a cluster of acute pneumonia cases with unknown origin in its province. On 9 January 2020, the Chinese Center for Disease Control and Prevention (CCDC) reported the identification of a novel coronavirus (later identified as the SARS-CoV-2) as the cause. [5]
At the beginning of December 2022, the third anniversary of the beginning of the COVID-19 outbreak was commemorated. As of 13 January 2025, 115 countries and territories have at least 200,000 confirmed COVID-19 cases, and of them, 90 (18 out of 23 or nearly 78.3%) have at least half a million confirmed COVID-19 cases, incl. Egypt and Hungary.
This is a general overview and status of places affected by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the virus which causes coronavirus disease 2019 and is responsible for the COVID-19 pandemic. The first human cases of COVID-19 were identified in Wuhan, the capital of the province of Hubei in China in December 2019. It ...
Transmission and life-cycle of SARS-CoV-2 causing COVID-19. Coronaviruses vary significantly in risk factor. Some can kill more than 30% of those infected, such as MERS-CoV, and some are relatively harmless, such as the common cold. [49] Coronaviruses can cause colds with major symptoms, such as fever, and a sore throat from swollen adenoids. [91]
SARS-CoV-2 is the seventh known coronavirus to infect people, after 229E, NL63, OC43, HKU1, MERS-CoV, and the original SARS-CoV. [105] Like the SARS-related coronavirus implicated in the 2003 SARS outbreak, SARS‑CoV‑2 is a member of the subgenus Sarbecovirus (beta-CoV lineage B). [106] [107] Coronaviruses undergo frequent recombination. [108]