Scientists in race to test vaccines

By Kate Kelland and Julie Steenhuysen
Updated June 1 2020 - 4:46pm, first published 4:39pm
Scientists say they need COVID-19 to be active in the community to truly test vaccines.
Scientists say they need COVID-19 to be active in the community to truly test vaccines.

The first wave of the COVID-19 pandemic may be waning but for vaccine developers that could be a problem.

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