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World News Tonight with David Muir
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CDC: 'War has changed' as dangerous delta variant spreads
The Centers for Disease Control and Prevention said the delta variant is more infectious than the common cold or seasonal flu and that vaccinated people who are infected can transmit the virus.
07.31.21 | 03:45 | CC
World News Tonight with David MuirVideosCDC: 'War has changed' as dangerous delta variant spreads
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