China’s vaccines could be less effective, but aren’t a failure

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China's vaccines could be less effective, but aren't a failure

Among more than 90 countries that are using Covid-19 vaccines from China, several countries have seen new Covid-19 outbreaks. Examples from these countries suggest that the Chinese vaccines may not be very effective at preventing the spread of the virus, but experts say they're not a total failure. CNN's David Culver has more.

04:41 - Source: CNN

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BARTLETT, ILLINOIS - MAY 01: Seven-year-old Hamza Haqqani, a 2nd grade student at Al-Huda Academy, uses a computer to participate in an E-learning class with his teacher and classmates while at his home on May 01, 2020 in Bartlett, Illinois. Al-Huda Academy, an Islam based private school that teaches pre-school through the 6th grade students, has had to adopt an E-learning program to finish the school year after all schools in the state were forced to cancel classes in an attempt to curtail the spread of the COVID-19 pandemic. (Photo by Scott Olson/Getty Images)

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