Scientists have understood coronavirus variations for many years. The 1960s marked the discovery of the first human strains: HCoV-229E and HCoV-OC43.

Research on coronavirus variations has indeed been ongoing for decades. Understanding the history of human strains like HCoV-229E and HCoV-OC43 provides valuable insights for current efforts in combating COVID-19.

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Studying past coronavirus strains is crucial for tackling COVID-19 effectively. History provides valuable lessons for the present.