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. 2015 Nov 12;62(4):477–483. doi: 10.1093/cid/civ951

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© The Author 2015. Published by Oxford University Press for the Infectious Diseases Society of America. All rights reserved. For permissions, e-mail journals.permissions@oup.com.

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Figure 2. — Correlation of serum viral RNA detection with neutralizing antibodies and viral RNA concentration in respiratory samples. A, Neutralizing antibodies; B, Viral RNA concentration in lower respiratory tract samples. Columns in both panels show serum viral load. Empty spaces represent serum samples that tested negative for viral RNA.