The risk of breathing these in is highest when people are in close proximity, but they can be inhaled over longer distances, particularly indoors. COVID-19 transmits when people breathe in air contaminated by droplets and small airborne particles containing the virus. Severe illness is more likely in elderly patients and those with certain underlying medical conditions. As of 10 March 2023, the pandemic had caused more than 676 million cases and 6.88 million confirmed deaths, making it one of the deadliest in history.ĬOVID-19 symptoms range from undetectable to deadly, but most commonly include fever, dry cough, and fatigue.
The World Health Organization (WHO) declared the outbreak a public health emergency of international concern on 30 January 2020, and a pandemic on 11 March 2020. Attempts to contain it there failed, allowing the virus to spread to other areas of Asia and later worldwide.
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 an ongoing global pandemic of coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2).
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