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.
Persistence of FRNAPH-I (black circles), FRNAPH-II (white circles), FRNAPH-III (black squares), and FRNAPH-IV (white squares) genomes, as well as of infectious FRNAPH (gray circles) in urban wastewater kept at 4°C in the dark. *, quantification limit; Cx, concentration at the indicated time; Co, initial concentration.
