Figure 1.
Serological responses in patients stratified by nonstructural 1 (NS1) antigen and polymerase chain reaction (PCR) positivity.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.