Ritva Syrjänen

Bacteriology of acute otitis media in a cohort of Finnish children followed for the first two years of life

Terhi Kilpi, Elja Herva, Tarja Kaijalainen et al. · The Pediatric Infectious Disease Journal · 2001 · 296 citations

Nasopharyngeal Carriage of<i>Streptococcus pneumoniae</i>in Finnish Children Younger Than 2 Years Old

Ritva Syrjänen, Terhi Kilpi, Tarja Kaijalainen et al. · The Journal of Infectious Diseases · 2001 · 260 citations · Full text

Natural Development of Antibodies to Pneumococcal Surface Protein A, Pneumococcal Surface Adhesin A, and Pneumolysin in Relation to Pneumococcal Carriage and Acute Otitis Media

Satu Rapola, Virva Jäntti, Raili Haikala et al. · The Journal of Infectious Diseases · 2000 · 156 citations · Full text

Vaccination, Mucosal Vaccination, Natural Development +12

Invasiveness of Serotypes and Clones of <i>Streptococcus pneumoniae</i> among Children in Finland

William P. Hanage, Tarja Kaijalainen, Ritva Syrjänen et al. · Infection and Immunity · 2004 · 155 citations · Full text

Infectious Disease Epidemiology, Molecular Epidemiology, Emerging Infectious Diseases +15

Using Multilocus Sequence Data To Define the Pneumococcus

William P. Hanage, Tarja Kaijalainen, Elja Herva et al. · Journal of Bacteriology · 2005 · 117 citations · Full text

Microbial Systematics, Molecular Epidemiology, Nonserotypeable Isolate +14