The COVID-19 pandemic, caused by the SARS-CoV-2 virus, originated in Wuhan, China, in late 2019 and has since led to over 20 million deaths worldwide. The virus likely originated from bats and infected another species before jumping to humans. Vaccines developed at record speed have been critical in saving lives, but the virus continues to evolve, with the dominant variant being omicron. Long COVID remains a lingering issue, affecting millions with persistent symptoms. The true origin of the pandemic is still unknown, and efforts to understand the virus and its long-term impacts are ongoing.
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5 things we know and still don’t know about COVID, 5 years after it appeared
