Delta variant is much more infectious than eariler COVID strains

Variants of Concern: Indoor air quality’s new VOC?

As the world’s nations labour to vaccinate their citizens, the ever-evolving COVID-19 virus is spinning out highly transmissible mutant strains that are overwhelming our ability to contain and manage coronavirus within society. Faced with a dismally small global immunisation rate of about 10%, lockdown-fatigue leading to the premature relaxing of control measures, and the overdue …

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