Ritva Syrjänen

2.0k total citations
44 papers, 1.5k citations indexed

About

Ritva Syrjänen is a scholar working on Epidemiology, Microbiology and Otorhinolaryngology. According to data from OpenAlex, Ritva Syrjänen has authored 44 papers receiving a total of 1.5k indexed citations (citations by other indexed papers that have themselves been cited), including 34 papers in Epidemiology, 15 papers in Microbiology and 9 papers in Otorhinolaryngology. Recurrent topics in Ritva Syrjänen's work include Pneumonia and Respiratory Infections (25 papers), Respiratory viral infections research (21 papers) and Bacterial Infections and Vaccines (15 papers). Ritva Syrjänen is often cited by papers focused on Pneumonia and Respiratory Infections (25 papers), Respiratory viral infections research (21 papers) and Bacterial Infections and Vaccines (15 papers). Ritva Syrjänen collaborates with scholars based in Finland, United States and United Kingdom. Ritva Syrjänen's co-authors include Terhi Kilpi, Tarja Kaijalainen, Elja Herva, Aino K. Takala, Kari Auranen, William P. Hanage, Brian G. Spratt, Hanna Nohynek, Jukka Jokinen and Arto A. Palmu and has published in prestigious journals such as PLoS ONE, Clinical Infectious Diseases and Journal of Bacteriology.

In The Last Decade

Ritva Syrjänen

41 papers receiving 1.4k citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Ritva Syrjänen Finland	19	1.2k	541	211	210	195	44	1.5k
Lea‐Ann S. Kirkham Australia	19	824 0.7×	489 0.9×	242 1.1×	168 0.8×	290 1.5×	65	1.4k
Sarah H. Sell United States	23	965 0.8×	678 1.3×	156 0.7×	125 0.6×	176 0.9×	49	1.5k
Georgina Tzanakaki Greece	22	1.2k 1.1×	1.2k 2.2×	54 0.3×	162 0.8×	96 0.5×	78	1.5k
David Tarragó Spain	20	1.0k 0.9×	405 0.7×	42 0.2×	114 0.5×	194 1.0×	55	1.4k
Janet R. Casey United States	32	2.1k 1.8×	1.4k 2.5×	862 4.1×	601 2.9×	698 3.6×	73	3.1k
H. Dabernat France	17	748 0.6×	502 0.9×	43 0.2×	97 0.5×	120 0.6×	67	1.0k
Robyn L. Marsh Australia	20	474 0.4×	233 0.4×	156 0.7×	81 0.4×	514 2.6×	50	1.2k
Taj Jadavji Canada	18	634 0.5×	391 0.7×	15 0.1×	194 0.9×	113 0.6×	56	1.1k
Jacob Bodilsen Denmark	22	607 0.5×	611 1.1×	28 0.1×	197 0.9×	75 0.4×	106	1.4k
Barbara W. Stechenberg United States	15	537 0.5×	302 0.6×	80 0.4×	166 0.8×	78 0.4×	27	1.3k

Countries citing papers authored by Ritva Syrjänen

Since Specialization

Citations

This map shows the geographic impact of Ritva Syrjänen's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Ritva Syrjänen with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ritva Syrjänen more than expected).

Fields of papers citing papers by Ritva Syrjänen

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ritva Syrjänen. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Ritva Syrjänen. The network helps show where Ritva Syrjänen may publish in the future.

Co-authorship network of co-authors of Ritva Syrjänen

This figure shows the co-authorship network connecting the top 25 collaborators of Ritva Syrjänen. A scholar is included among the top collaborators of Ritva Syrjänen based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Ritva Syrjänen. Ritva Syrjänen is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Palmu, Arto A., Stéphanie Pépin, Ritva Syrjänen, et al.. (2024). High‐Dose Quadrivalent Influenza Vaccine for Prevention of Cardiovascular and Respiratory Hospitalizations in Older Adults. Influenza and Other Respiratory Viruses. 18(4). e13270–e13270. 5 indexed citations

Palmu, Arto A., Sangita Kulathinal, Kari Auranen, et al.. (2024). Development of Real-Time Surveillance for Serious Adverse Events in a Pragmatic Clinical Trial Using National Registers in Finland. Clinical Epidemiology. Volume 16. 901–915.

Huotari, Kaisa, et al.. (2024). Risk of nosocomial respiratory syncytial virus versus influenza among adult patients in acute care hospitals. Infection Prevention in Practice. 7(1). 100431–100431.

Syrjänen, Ritva, et al.. (2022). Effectiveness of trivalent influenza vaccines against hospitalizations due to laboratory-confirmed influenza a in the elderly: Comparison of test-negative design with register-based designs. Vaccine. 40(31). 4242–4252. 1 indexed citations

Syrjänen, Ritva, et al.. (2021). Clinical characteristics and population‐based attack rates of respiratory syncytial virus versus influenza hospitalizations among adults—An observational study. Influenza and Other Respiratory Viruses. 16(2). 276–288. 19 indexed citations

Ndombo, Paul Koki, Ritva Syrjänen, Heini Huhtala, et al.. (2018). The prevalence of otitis media in 2–3 year old Cameroonian children estimated by tympanometry. International Journal of Pediatric Otorhinolaryngology. 115. 181–187. 15 indexed citations

Nieminen, Heta, et al.. (2015). Health benefit for the child and promotion of the common good were the two most important reasons for participation in the FinIP vaccine trial. WOS.

Nieminen, Heta, et al.. (2015). Health benefit for the child and promotion of the common good were the two most important reasons for participation in the FinIP vaccine trial. Vaccine. 33(31). 3695–3702. 3 indexed citations

Palmu, Arto A., Janne J. Jokinen, Heta Nieminen, et al.. (2014). Vaccine eﬀectiveness of the pneumococcal Haemophilus inﬂuenzae protein D conjugate vaccine (PHiD-CV10) against clinically suspected invasive pneumococcal disease: a cluster-randomised trial. STM:n Hallinnonalan avoin julkaisuarkisto (Julkari). 36 indexed citations

10.

Leino, Tuija, Fabian Hoti, Ritva Syrjänen, Antti Tanskanen, & Kari Auranen. (2008). Clustering of serotypes in a longitudinal study of Streptococcus pneumoniae carriage in three day care centres. BMC Infectious Diseases. 8(1). 173–173. 19 indexed citations

11.

Palmu, Arto A. & Ritva Syrjänen. (2005). Diagnostic value of tympanometry using subject-specific normative values. International Journal of Pediatric Otorhinolaryngology. 69(7). 965–971. 11 indexed citations

12.

Hanage, William P., Tarja Kaijalainen, Elja Herva, et al.. (2005). Using Multilocus Sequence Data To Define the Pneumococcus. Journal of Bacteriology. 187(17). 6223–6230. 83 indexed citations

13.

Hanage, William P., Tarja Kaijalainen, Ritva Syrjänen, et al.. (2004). Invasiveness of Serotypes and Clones of Streptococcus pneumoniae among Children in Finland. Infection and Immunity. 73(1). 431–435. 120 indexed citations

14.

Könönen, Eija, et al.. (2003). Age-related frequency of penicillin resistance of oral Veillonella. Diagnostic Microbiology and Infectious Disease. 46(4). 279–283. 13 indexed citations

15.

Lankinen, Kari S., et al.. (2003). Type-specific enzyme immunoassay for detection of pneumococcal capsular polysaccharide antigens in nasopharyngeal specimens. Journal of Microbiological Methods. 56(2). 193–199. 9 indexed citations

16.

Kilpi, Terhi, Jukka Kero, Janne J. Jokinen, et al.. (2002). Common Respiratory Infections Early in Life May Reduce the Risk of Atopic Dermatitis. Clinical Infectious Diseases. 34(5). 620–626. 29 indexed citations

17.

Kilpi, Terhi, Elja Herva, Tarja Kaijalainen, Ritva Syrjänen, & Aino K. Takala. (2001). Bacteriology of acute otitis media in a cohort of Finnish children followed for the first two years of life. The Pediatric Infectious Disease Journal. 20(7). 654–662. 242 indexed citations

18.

Palmu, Arto A., Ritva Syrjänen, Terhi Kilpi, et al.. (2001). Negative pressure tympanograms in children less than 2 years of age—different bacterial findings in otitis media by tympanometric results. International Journal of Pediatric Otorhinolaryngology. 61(1). 61–69. 12 indexed citations

19.

Rapola, Satu, Raili Haikala, Ritva Syrjänen, et al.. (2000). Natural Development of Antibodies to Pneumococcal Surface Protein A, Pneumococcal Surface Adhesin A, and Pneumolysin in Relation to Pneumococcal Carriage and Acute Otitis Media. The Journal of Infectious Diseases. 182(4). 1146–1152. 129 indexed citations

20.

Saarela, Maria, Hannele Jousimies–Somer, A. Takala, et al.. (1999). Age‐related acquisition of oral and nasopharyngeal yeast species and stability of colonization in young children. Oral Microbiology and Immunology. 14(3). 176–182. 34 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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