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.
Anti-HA stalk antibody titers observed based on clinical outcome categories compared to HAI and NAI titers. Mean prechallenge hemagglutinin inhibition (HAI) titer, neuraminidase inhibition (NAI) titer, and anti-HA stalk titer in those who experienced MMID (defined as experiencing symptoms and detectable shedding) versus those who did not. Black bars represent 95% confidence intervals. Statistically significant P values are indicated with an asterisk.
