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The coronavirus Delta variant, first identified in India in October 2020, is spreading quickly around the globe, becoming the dominant virus strain. The World Health Organization said on June 25, 2021, that Delta has become the most transmissible Covid-19 virus variant discovered so far. As of June 25, the Delta strain had spread to at least 85 countries. Studies show that the AstraZeneca and Pfizer Covid-19 vaccines remain broadly effective against the new strain, but that the Chinese Covid-19 vaccine Sinovac Biotech appears less effective. But health experts say more scientific research of vaccine efficacy against the Delta variant is needed as the new variant poses a grave danger to unvaccinated people, particularly in poorer nations with lower vaccination rates.
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As Delta variant keeps Asia on edge, could Israel and Britain offer lessons? https://sc.mp/ixb5
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