Fig 1.
Levels of clinical evidence to support an increased risk and host susceptibility to infections in the asthmatic and atopic host. LRTI, Lower respiratory tract infections; RV, rhinovirus; URI, upper respiratory tract infection.
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.