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.
Imposition and lifting of seven NPIs in all zones over time in Sri Lanka; the degree of imposition intensities is marked in different shades of the same color and is depicted in the legend; evidence of such implementation arrangements was given in Table S2 in Supplementary Materials.
