Exploring the Bridge Cases' Role in the Transmission of the SARS-CoV-2 Delta Variant - Ruili City, Yunnan Province, China, July-September 2021
CHINA CDC WEEKLY(2021)
Abstract
In border inspection and quarantine, tests for SARS-CoV-2 IgM and IgG antibodies should be strengthened alongside nucleic acid tests to prevent probable cases with transmission potential from crossing the land border into China. In contact tracing investigations, the bridging role of probable cases should be considered to reconstruct the transmission chain.
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Key words
SARS-CoV-2 variant Delta,bridge case,transmission chain
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