New Viral Variant Evolved Inside Man With Record COVID Infection

The case, reported by infectious disease specialists at the Amsterdam University Medical Center in The Netherlands, describes a now-deceased 72-year-old immunocompromised man who had COVID-19 for 613 days – so long the virus evolved into a new immune-evasive variant inside his body.

The man had received multiple COVID-19 vaccinations but his immune system had failed to mount a sufficiently protective response against the virus, which often happens in older people and immunocompromised individuals.