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.
Average number of days related to common infectious disease (CID) symptoms that affected the elderly subjects at the different intervals of the three time-points (total period T0–T56, treatment period T0–T28, and follow-up period T28–T56) for Prebiotic (A), Synbiotic (B), and Placebo (D) groups. Data are expressed as mean ± SEM. The Mann–Whitney test was applied (* p-value < 0.05 and ** p-value < 0.01).
