
Despite progress on a vaccine, there is no guarantee it will be effective, experts said, and testing and contact tracing are still short of the levels needed.
Published: May 13, 2020 at 12:25AM
from NYT Health https://ift.tt/3crmrIB

Despite progress on a vaccine, there is no guarantee it will be effective, experts said, and testing and contact tracing are still short of the levels needed.
Published: May 13, 2020 at 12:25AM
from NYT Health https://ift.tt/3crmrIB
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