Betsy McKay and Phared Dvorak offer a long booklet in the Wall Street Journal, “A Deadly Coronavirus Was Inevitable. Why Was No One Ready?, Aug. 13, 2020. Subtitle: “Scientists warned of a pandemic for decades, yet when Covid-19 arrived, the world had few resources and little understanding.”
One reason is that people didn’t connect the dots. Asymptomatic transmission of a highly infectious “respiratory” virus meant that if it caused severe disease in any significant rate, we would have to have lockdowns or effective contact tracing to avoid collapse of the health care systems. We didn’t see that long term we would have to shut down all indoor gatherings.
I have been corresponding in YouTube comments with a UK doctor who says there are many other coronaviruses which cause isolated flareups, and I may have encountered one in California in Feb. 2002. Having simultaneous coronavirus infections might cause codon inserts. Often, however, most healthy people learn to deal with these viruses with their T-cells in time.
But they can become dangerous.
Picture: Embed from Wikipedia of spike proteins, click for attribution