1. Seroprevalence of IgG antibodies against Bordetella pertussis in healthy individuals aged 4–24 years in Turkey 
M. Cevik, U. Beyazova, A.L. Aral, A. Duyan Camurdan, S. Ozkan, F. Sahin, C. Aybay 
Clinical Microbiology and Infection 
Volume 14, Issue 4, Pages (April 2008)
DOI: /j x
Copyright © 2008 European Society of Clinical Infectious Diseases Terms and Conditions

2. Fig. 1
Occurrence of Bordetella pertussis (mixture of pertussis toxin (PT) and filamentous haemagglutinin (FHA)) IgG antibodies according to age group.
Clinical Microbiology and Infection  , DOI: ( /j x)
Copyright © 2008 European Society of Clinical Infectious Diseases Terms and Conditions

3. Fig. 2
The frequency of anti-pertussis IgG titres (mixture of pertussis toxin (PT) and filamentous haemagglutinin (FHA)) in different age groups.
Clinical Microbiology and Infection  , DOI: ( /j x)
Copyright © 2008 European Society of Clinical Infectious Diseases Terms and Conditions