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The global death toll from COVID-19 topped 2 million Friday as vaccines developed at breakneck speed are being rolled out around the world.
Based on detailed contact tracing of about 20,000 people infected with the new variant — including nearly 3,000 children under 10 — the report showed that young children were about half as likely as adults to transmit the variant to others. That was true of the previous iteration of the virus, as well.
A global team of researchers arrived Thursday in the Chinese city where the coronavirus pandemic was first detected.
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