Treatments include novel antiviral drugs and symptom control.

ĬOVID-19 vaccines were widely deployed in various countries beginning in December 2020. Mutations have produced many strains (variants) with varying degrees of infectivity and virulence.

Transmission of the virus is often through airborne particles. As of 19 November 2023, the pandemic had caused 771,820,173 cases and 6,978,162 confirmed deaths, ranking it fifth in the deadliest epidemics and pandemics in history.ĬOVID-19 symptoms range from asymptomatic to deadly, but most commonly include fever, sore throat, nocturnal cough, and fatigue. The World Health Organization (WHO) declared the outbreak a public health emergency of international concern (PHEIC) on 30 January 2020. Attempts to contain it there failed, allowing the virus to spread to other areas of Asia and then worldwide in early 2020. The novel virus was first identified in an outbreak in the Chinese city of Wuhan in December 2019. The COVID-19 pandemic, also known as the coronavirus pandemic, is a global pandemic of coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2).

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