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.
Distribution of serotypes with regard to 7-valent conjugate vaccine (PCV7) among pneumococcal isolates from nasopharyngeal aspirates of children < 5 yr of age during 1997-2002 and 2009-2010 periods in Korea. *Differentiation of 6C/6D from 6A/6B was not done in 1997-2002 studies; †Statistically significant (P < 0.05, by Fisher exact test) increase or decrease in the proportion of each serotypes are marked.
