10 March 2023: "JHU has stopped collecting [covid-19] data as of [10/3/2023]"

1/2020 to 3/2023: coronavirus.jhu.edu published statistics on covid-19 cases world wide.

2019 December: Infections by the 'SARS-CoV-2' virus began in Wuhan, China and eventually became the 'covid-19' world-wide pandemic. Initially the death rate seemed to be "only" about 1% which was perhaps fortunate because it spread far more rapidly and widely than SARS-CoV-1 and MERS-CoV. (The similarity of SARS-CoV-1 and SARS-CoV-2 genomes is about 80% [www][2022].)

2012: 'Middle East respiratory syndrome–related coronavirus' (MERS-CoV). The death rate was about 34%.

2002-2004 there was an outbreak of 'Severe acute respiratory syndrome' (SARS) caused by the virus 'SARS-related coronavirus' (SARS-CoV-1). Fortunately the outbreak faded out because the death rate was about 10%.

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