Sinovac delta variant. Explainer: Are Chinese COVID

However, the spread of Delta, which the WHO expects to become dominant globally, has prompted a reassessment of vaccine effectiveness. But some countries rejected accepting the vaccines, citing lack of data on their effectiveness against Delta. Indonesia and Turkey rolled out the vaccine this week.

Joseph Varon hugs and comforts a patient in the COVID-19 intensive care unit ICU during Thanksgiving at the United Memorial Medical Center on November 26, 2020 in Houston, Texas.

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The trials are the last and most critical step before regulatory approval is sought for mass distribution. BEIJING, June 29 Reuters - Many countries from China to Indonesia and Brazil rely heavily on Chinese vaccines to inoculate their people against COVID-19, but there are growing concerns about whether they provide enough protection against the Delta variant, first identified in India. But with a number of those recipient countries now being overrun by fresh and devastating outbreaks, and as hundreds of fully vaccinated citizens become infected with virulent new strains, faith in Sinovac has started to spiral.

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However, it is less effective than the mRNA vaccines on the market. The mRNA vaccines for COVID-19 have been found to provide better protection than their inactivated counterparts.

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Other high-risk countries reflect similar trends. Feng did not provide details including the name of the two vaccines.

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Also Read: This was first identified in India. CDC Is Now Concerned About COVID-19 Delta According to ' latest report, CDC Director Dr.

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