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Trade suffered for some time, and most people temporarily left the wars. Most laborers passed away, which caused personal suffering and devastated families through lost survivals. Also, landowners who used laborers as farmers were also affected. -
The flu hit a world population of which a very large share was extremely poor. Large shares of the population were undernourished, lived in poor health, had overcrowding and poor sanitation, and low hygiene standards. -
COVID-19 is an infectious disease caused by SARS-CoV-2. When people get infected by the virus, their symptoms can vary. Some may experience major symptoms, others may experience minor symptoms. There is a vaccine and treatment, but the pandemic has not ended yet. -
H1N1 "swine flu" killed 284,000 people in what was the century's fifth flu pandemic -
In 2019, a new coronavirus was identified as the cause of a disease outbreak that originated in China. The virus is now known as the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The disease it causes is called coronavirus disease 2019 (COVID-19). -
SARS killed 813 people in what health experts call a "near-pandemic" in 2002.