India Today

VIRAL TRAJECTORY

HOW COVID IS MUTATING INTO A MORE INFECTIOUS BUT MILDER VIRUS

ALPHA

Infectivity: 30-50 per cent more infectious than the original Wuhan-Hu-1 strain. Emerged in India around Dec. 2020

Severity in India: 1,000 daily deaths at its peak, but soon overthrown by Delta

Common symptoms: Fever, cough, breathing difficulty, bodyache, fatigue

BETA

50 per cent more infectious

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