What Is a Second Wave of a Pandemic, and Could It Happen for COVID-19?: Media
Some pandemic diseases re-emerge in different segments of populations and spread anew, giving rise to a secondâand sometimes deadlierâwave of disease
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SARS-CoV-2 virus particles
Colorized microscopic image of an apoptotic cell (purple) heavily infected with SARS-CoV-2...
Courtesy, NIAID