Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

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.

View full-text article in PMC

. 2026 Mar 10;17:1758831. doi: 10.3389/fimmu.2026.1758831

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

Copyright © 2026 Zhang, Lu, Yang, Shi, Zhao, He, Lu and Li.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

PMC Copyright notice

Forest plot from a sensitivity analysis showing relative risk (RR) values and 95 percent confidence intervals for individual excluded studies, with the overall summary at the bottom marked in red; RR values range from 2.92 to 3.90, with all studies combined giving RR equals 3.47. — Sensitivity analysis of efficacy of intranasal natural products on survival rate.