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.
CSF and serum samples were subjected to RFFIT for the analysis of virus neutralizing antibodies (VNA). Statistical analysis was performed by student T test and the symbol *** indicates a p value <0.0001, ** indicates a p value <0.001 and * indicates a p value <0.05.
