RESUMEN
Subdural empyema (SDE) is a rare condition which can appear secondary to meningitis in childhood, especially in infants. This study was planned to evaluate and compare clinical and laboratory features, treatment, and outcome of children with SDE to those with acute bacterial meningitis (ABM) without SDE. The electronic medical files of 266 patients diagnosed with ABM between January 2009 and December 2019 were evaluated. Patients' demographic and clinical features, laboratory results, cranial imaging findings, treatment, and outcomes were recorded. SDE was identified in 10 patients, 3.7% of all diagnosed with meningitis. The etiology of SDE was identified in eight (80%). The most common responsible pathogen was Streptococcus pneumoniae. Cranial imaging was performed between the 2nd and 13th days of admission, and the most common reason of performing cranial imaging was persistence of fever. Two patients were healed with 4-6 weeks of antibiotic treatment without surgery, eight (80%) needed surgical intervention.Conclusion: The clinical signs and symptoms of SDE may be subtle. If the fever persists or focal neurological findings are seen during the treatment of bacterial meningitis, SDE should be suspected. Furthermore, patients with ABM who are determined to have a protein-to-glucose ratio in the cerebrospinal fluid above 4.65 should be carefully monitored for SDE development. What is known: ⢠Subdural empyema may develop subsequently to meningitis, especially in the infant age group in whom very little is known in terms of disease characteristics. ⢠Delay in diagnosis and treatment can cause long-term neurologic sequelae and mortality. What is new: ⢠Persistence or relapse of fever during the treatment of acute meningitis is an important warning sign for SDE even if there are no other symptoms. ⢠Children with subdural empyema secondary to bacterial meningitis have higher protein-to-glucose ratio in the CSF, and a threshold of Ë 4.65 was determined to demonstrate 100% sensitivity and 50.7% specificity.
Asunto(s)
Empiema Subdural , Meningitis Bacterianas , Antibacterianos/uso terapéutico , Niño , Empiema Subdural/diagnóstico , Empiema Subdural/tratamiento farmacológico , Empiema Subdural/etiología , Glucosa , Humanos , Lactante , Meningitis Bacterianas/complicaciones , Meningitis Bacterianas/diagnóstico , Meningitis Bacterianas/tratamiento farmacológicoRESUMEN
BACKGROUND: We aimed to determine molecular characteristics of Staphylococcus aureus isolates cultured from hospitalized pediatric patients. METHODS: All accessible S. aureus isolates cultured from hospitalized pediatric patients were analyzed for staphylococcal cassette chromosome mec (SCCmec) types, Panton-Valentine Leukocidin (PVL) encoding genes and antibiotic resistance patterns. RESULTS: A total of 132 S. aureus isolates, 102 methicillin-susceptible S. aureus (MSSA) (81.8%), 30 methicillin-resistant S. aureus (MRSA) (18.2%) were included in the study. Sixty of 132 (45.5%) S. aureus isolates were cultured from skin and soft tissue infections (SSTIs), 50 (37.9%) from bloodstream infections, 11 (8.3%) from bone infections and 11 (8.3%) from other sterile sites. Fifty-three of 102 (52%) MSSA isolates were cultured from SSTI, 35 (34.3%) from bloodstream infections, 7 (6.9%) from bone infections and 7 (6.9%) from other sterile sites (P = 0.083). Fifteen MRSA isolates (50%) were cultured from blood culture, 7 from (23.3%) SSTI, 4 (13.3%) from bone infections and 4 from (13.3%) other sterile sites. Nine PVL gene harboring S. aureus isolates were isolated from SSTI (75%), 2 from blood culture (16.7%) and 1 from other sterile site (8.3%). Three MRSA (6.7%) isolates were found to be positive for SCCmec type III and 16 MRSA isolates (53.3%) were found to be positive for SCCmec type IV. Three MRSA isolates harboring SCCmec type III was isolated from blood culture, 11 of 16 MRSA isolates harboring SCCmec type IV was isolated from blood culture, 3 isolates were isolated from bone infections and 2 isolates were isolated from SSTI (P < 0.001). Five of 72 (6.9%) hospital-acquired S. aureus isolates and 7 of 60 (11.7%) community-acquired S. aureus isolates were PVL gene positive. Twenty-two of 72 (30.6%) hospital-acquired S. aureus infections and 8 of 60 (13.3%) community-acquired S. aureus isolates were MRSA (P = 0.015). All of the 3 SCCmec III harboring MRSA isolates and 11 of 16 SCCmec IV carrying MRSA isolates were hospital acquired. Hospitalization in the past 1 year was found to increase MRSA infections 3.95 times (P = 0.038, 95% confidence interval: 1.078-14.48). CONCLUSIONS: As distribution of virulence genes differs among S. aureus isolates from different regions, it is necessary to monitor the emergence of genes encoding PVL, SCCmec in both MRSA and MSSA throughout the world. Our results show a high prevalence of PVL in community-onset S. aureus infections in children. SCCmec type IV was more commonly isolated in hospital-acquired MRSA isolates, and PVL gene was more commonly isolated in community-acquired S. aureus infections.
Asunto(s)
Infecciones Estafilocócicas/microbiología , Staphylococcus aureus/clasificación , Adolescente , Antibacterianos/uso terapéutico , Técnicas de Tipificación Bacteriana , Niño , Niño Hospitalizado , Preescolar , Femenino , Humanos , Lactante , Recién Nacido , Masculino , Staphylococcus aureus Resistente a Meticilina/efectos de los fármacos , Staphylococcus aureus Resistente a Meticilina/aislamiento & purificación , Pruebas de Sensibilidad Microbiana , Infecciones Estafilocócicas/tratamiento farmacológico , Infecciones Estafilocócicas/epidemiología , Staphylococcus aureus/efectos de los fármacos , Staphylococcus aureus/aislamiento & purificación , Turquía/epidemiología , Factores de Virulencia/genética , Adulto JovenRESUMEN
Neisseria meningitidis (N. meningitidis) is regarded as the leading cause of bacterial meningitis in many regions of the world. The empiric antimicrobial treatment is mainly based on antimicrobial resistance and patient characteristics. We aimed to analyze susceptibility patterns of N. meningitidis strains isolated in Turkey. Invasive meningococci collected in a multicenter, hospital-based, epidemiological surveillance study of pediatric (0-18 years of age) bacterial meningitis cases between 2013 and 2018 were studied. Five isolates (8.7%) displayed resistance to penicillin-G, while 13 isolates (22.8%) had intermediate susceptibility. All isolates were cefotaxime and rifampin susceptible. The data shows appropriateness of third-generation cephalosporins in empirical use for meningococcal infections in children. Since Turkey is located in a transition zone geographically, surveillance reports are very crucial.
Asunto(s)
Antibacterianos/uso terapéutico , Meningitis Meningocócica/tratamiento farmacológico , Meningitis Meningocócica/epidemiología , Neisseria meningitidis/aislamiento & purificación , Resistencia a las Penicilinas/efectos de los fármacos , Adolescente , Niño , Preescolar , Femenino , Humanos , Lactante , Recién Nacido , Masculino , Pruebas de Sensibilidad Microbiana , Turquía/epidemiologíaRESUMEN
Viridans streptococci are still under investigation concerning epidemiology, pathogenesis and clinical presentations. We aimed to investigate the clinical presentations and outcomes of pediatric patients infected with Streptococcus mitis/oralis. Based on the accumulation of bloodstream infections (BSI) caused by S. mitis/oralis in 4 patients in our Hematology and Bone Marrow Transplantation Department at a particular time, a review of the medical and microbiological records of pediatric patients with positive blood cultures for S. mitis/oralis in the entire hospital was performed. In addition, a retrospective case-control study was conducted. Pulsed-field gel electrophoresis of S. mitis/oralis in 4 patients displayed unrelatedness of the strains. A total of 53 BSI (42 BSI and 11 catheter-related BSI) were analyzed. Thirty-four percent of patients with BSI caused by S. mitis/oralis had febrile neutropenia. Clinical and microbiological outcomes were favorable and infection-related mortality was not observed. Although not significant, previous antibiotic use and trimethoprim-sulfamethoxazole prophylaxis were more common in the case group. S. mitis/oralis seems likely an important agent in bacteremic children who are particularly neutropenic because of the underlying hematologic and oncologic diseases. Prompt management of infections with appropriate antimicrobials, regarding antibiotic susceptibilities of organisms, may facilitate favorable outcomes.
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Antibacterianos/uso terapéutico , Profilaxis Antibiótica , Bacteriemia/diagnóstico , Infecciones Estreptocócicas/diagnóstico , Infecciones Estreptocócicas/microbiología , Streptococcus mitis , Streptococcus oralis , Adolescente , Antibacterianos/farmacología , Bacteriemia/tratamiento farmacológico , Bacteriemia/microbiología , Estudios de Casos y Controles , Infecciones Relacionadas con Catéteres/diagnóstico , Infecciones Relacionadas con Catéteres/tratamiento farmacológico , Infecciones Relacionadas con Catéteres/microbiología , Niño , Preescolar , Femenino , Enfermedades Hematológicas/complicaciones , Humanos , Lactante , Masculino , Pruebas de Sensibilidad Microbiana , Estudios Retrospectivos , Infecciones Estreptocócicas/tratamiento farmacológico , Streptococcus mitis/efectos de los fármacos , Streptococcus oralis/efectos de los fármacos , Resultado del TratamientoAsunto(s)
Bacteriemia , Calcitonina , Biomarcadores , Niño , Humanos , Receptores de Lipopolisacáridos , Fragmentos de PéptidosRESUMEN
BACKGROUND: Catheter related blood stream infections (CRBSI) are mostly preventable hospital-acquired conditions. We aimed to investigate the value of presepsin in detection of CRBSI in hospitalized children. METHODS: Hospitalized pediatric patients who had clinical suspicion of CRBSI were followed. Results of peripheral blood cultures and blood cultures from central venous catheters, procalcitonin (PCT), C-reactive protein (CRP), total white blood cell (WBC) counts were recorded. Serum samples for presepsin were studied at the same time with the samples of healthy controls. The patients with positive blood cultures were defined as proven CRBSI and with negative cultures as suspected CRBSI. RESULTS: Fifty-eight patients and 80 healthy controls were included in the study. Proven CRBSI group consisted of 36 patients (62%) with positive blood cultures and compared with the suspected CRBSI group (n = 22, 36%) with negative culture results. There was no difference between proven and suspected CRBSI groups concerning WBC, PCT, CRP and presepsin. Presepsin was significantly higher in patient groups when compared with healthy controls. The receiver operating characteristic curve area under the curve was 0.98 (%95 CI: 0.97-1) and best cut-off value was 990 pg/ml. CONCLUSION: In hospitalized pediatric patients with CRBSI, presepsin may be a helpful rapid marker in early diagnosis.
Asunto(s)
Biomarcadores/sangre , Infecciones Relacionadas con Catéteres/sangre , Infecciones Relacionadas con Catéteres/diagnóstico , Receptores de Lipopolisacáridos/sangre , Fragmentos de Péptidos/sangre , Área Bajo la Curva , Cultivo de Sangre , Niño , Preescolar , Diagnóstico Precoz , Femenino , Humanos , Lactante , Masculino , Estadísticas no Paramétricas , Centros de Atención TerciariaRESUMEN
Although outbreaks of Neisseria meningitidis serogroup X occured in a couple of African countries, a limited number of serogroup X meningococcal cases were reported in America and Europe as well as Turkey. Additionally, serogroup X is still not represented in current conjugated meningococcal vaccines. Here, we describe the first pediatric case with meningitis caused by Neisseria meningitidis serogroup X ST-5799 (ST-22 complex) that formed a distinct lineage.
Asunto(s)
Antibacterianos/uso terapéutico , Meningitis Meningocócica/microbiología , Neisseria meningitidis/inmunología , Serogrupo , ADN Bacteriano/líquido cefalorraquídeo , ADN Bacteriano/aislamiento & purificación , Quimioterapia Combinada/métodos , Humanos , Lactante , Masculino , Meningitis Meningocócica/diagnóstico , Meningitis Meningocócica/tratamiento farmacológico , Meningitis Meningocócica/inmunología , Neisseria meningitidis/genética , Neisseria meningitidis/aislamiento & purificación , Filogenia , Resultado del Tratamiento , TurquíaRESUMEN
Abstract Objective The potential role of procalcitonin (PCT) in the diagnosis of catheter-related bloodstream infection (CRBSIs) is still unclear and requires further research. The diagnostic value of serum PCT for the diagnosis of CRBSI in children is evaluated here. Method This study was conducted between October 2013 and November 2014, and included patients with suspected CRBSI from 1 month to 18 years of age who were febrile, with no focus of infection, and had a central venous catheter. Levels of PCT and other serum markers were measured, and their utility as CRBSI markers was assessed. Additionally, the clinical performance of a new, automated, rapid, and quantitative assay for the detection of PCT was tested. Results Among the 49 patients, 24 were diagnosed with CRBSI. The PCT-Kryptor and PCT-RTA values were significantly higher in proven CRBSI compared to those in unproven CRBSI (p = 0.03 and p = 0.03, respectively). There were no differences in white blood cell count and C-reactive protein (CRP) levels between proven CRBSI and unproven CRBSI. Among the 24 patients with CRBSI, CRP was significantly higher among those with Gram-negative bacterial infection than in those with Gram-positive bacterial infections. PCT-Kryptor was also significantly higher among patients with Gram-negative bacterial infection than in those with Gram-positive bacterial infections (p = 0.01 and p = 0.02, respectively). Conclusions The authors suggest that PCT could be a helpful rapid diagnostic marker in children with suspected CRBSIs.
Resumo Objetivo O possível papel da procalcitonina (PCT) no diagnóstico de infecções de corrente sanguínea relacionadas a cateter (ICSRCs) ainda não está claro e precisa ser mais pesquisado. O valor diagnóstico da PCT sérica para o diagnóstico de ICSRC em crianças é avaliado neste estudo. Método Este estudo foi feito entre outubro de 2013 e novembro de 2014 e incluiu pacientes com suspeita de ICSRC de um mês a 18 anos que estavam febris, não tinham foco de infecção e tinham cateter venoso central. Foram medidos os níveis de PCT e de outros marcadores séricos, cuja utilidade como marcadores de ICSRC foi avaliada. Adicionalmente, foi testado o desempenho clínico de um novo ensaio quantitativo automatizado e rápido para a detecção de PCT. Resultados Dentre 49 pacientes, 24 foram diagnosticados com ICSRC. Os valores de PCT-Kryptor e PCT-RTA foram significativamente maiores em ICSRCs comprovadas do que em ICSRCs não comprovadas (p = 0,03 e p = 0,03, respectivamente). Não houve diferença na contagem de glóbulos brancos e nos níveis de proteína C reativa (PCR) entre ICSRCs comprovadas e ICSRCs não comprovadas. Dentre os 24 pacientes com ICSRC, a PCR era significativamente maior entre aqueles com infecção bacteriana gram-negativa do que naqueles com infecção bacteriana gram-positiva. O PCT-Kryptor também foi significativamente maior entre pacientes com infecção por bactérias gram-negativas do que naqueles com infecção por bactérias gram-positivas (p = 0,01 e p = 0,02, respectivamente). Conclusões Sugerimos que a PCT pode ser um marcador de diagnóstico rápido útil em crianças com suspeita de ICSRCs.
Asunto(s)
Humanos , Masculino , Femenino , Recién Nacido , Lactante , Preescolar , Niño , Adolescente , Calcitonina/sangre , Bacteriemia/diagnóstico , Bacteriemia/sangre , Infecciones Relacionadas con Catéteres/diagnóstico , Infecciones Relacionadas con Catéteres/sangre , Valores de Referencia , Proteína C-Reactiva/análisis , Inmunoensayo , Biomarcadores/sangre , Reproducibilidad de los Resultados , Sensibilidad y Especificidad , Infecciones por Bacterias Grampositivas/diagnóstico , Infecciones por Bacterias Grampositivas/sangre , Infecciones por Bacterias Gramnegativas/diagnóstico , Infecciones por Bacterias Gramnegativas/sangre , Estadísticas no Paramétricas , Recuento de LeucocitosRESUMEN
BACKGROUND: Clinical diagnosis of diphtheria is often difficult, in particular in countries where the disease is rarely observed, such as Turkey. In 2011, after 12 years of no recorded diphtheria cases in Turkey, a 34-year-old woman was diagnosed with diphtheria; she later died of myocarditis. In this study, we aimed to demonstrate the diagnostic potential of an immunofluorescent antibody method to determine the presence of diphtheria toxin (DT) in the myocardial cells of DT-injected rabbits and the female subject. METHODS: We randomly divided rabbits into two groups: a control group and a DT-injected group. Diphtheria intoxication was simulated in the rabbits by intravenous injection of DT. The myocardium of the rabbits and the female subject were harvested for histopathologic and immunofluorescence examination. A mouse monoclonal anti-DT antibody was used for the immunofluorescent antibody method. RESULTS: The presence of DT in the myocardial cells of both the rabbits and the female subject was visualized using the immunofluorescent method. CONCLUSIONS: Laboratory diagnosis of diphtheria is challenging because of non-toxigenic C. diphtheriae strains and/or the dysfunction of DT. However, visualizing the presence of DT in the myocardial tissue may act as an indicator of biologically active DT. We validated that an immunofluorescent method, which utilizes a monoclonal anti-DT (A-subunit specific) antibody, is a useful diagnostic tool to determine the presence of DT in the myocardium of rabbits and human.
RESUMEN
Successful vaccination policies for protection from bacterial meningitis are dependent on determination of the etiology of bacterial meningitis. Cerebrospinal fluid (CSF) samples were obtained prospectively from children from 1 month to ≤18 years of age hospitalized with suspected meningitis, in order to determine the etiology of meningitis in Turkey. DNA evidence of Neisseria meningitidis (N. meningitidis), Streptococcus pneumoniae (S. pneumoniae), and Hemophilus influenzae type b (Hib) was detected using multiplex polymerase chain reaction (PCR). In total, 1452 CSF samples were evaluated and bacterial etiology was determined in 645 (44.4%) cases between 2005 and 2012; N. meningitidis was detected in 333 (51.6%), S. pneumoniae in 195 (30.2%), and Hib in 117 (18.1%) of the PCR positive samples. Of the 333 N. meningitidis positive samples 127 (38.1%) were identified as serogroup W-135, 87 (26.1%) serogroup B, 28 (8.4%) serogroup A and 3 (0.9%) serogroup Y; 88 (26.4%) were non-groupable. As vaccines against the most frequent bacterial isolates in this study are available and licensed, these results highlight the need for broad based protection against meningococcal disease in Turkey.
Asunto(s)
Meningitis por Haemophilus/epidemiología , Meningitis Meningocócica/epidemiología , Meningitis Neumocócica/epidemiología , Adolescente , Líquido Cefalorraquídeo/microbiología , Niño , Preescolar , ADN Bacteriano/líquido cefalorraquídeo , Monitoreo Epidemiológico , Femenino , Haemophilus influenzae tipo b/aislamiento & purificación , Humanos , Lactante , Masculino , Meningitis por Haemophilus/microbiología , Meningitis Meningocócica/microbiología , Meningitis Neumocócica/microbiología , Reacción en Cadena de la Polimerasa Multiplex , Neisseria meningitidis/aislamiento & purificación , Prevalencia , Estudios Prospectivos , Streptococcus pneumoniae/aislamiento & purificación , Turquía/epidemiologíaRESUMEN
Vancomycin-resistant enterococci (VRE) have become a major concern in medical practice. Asymptomatic VRE colonization of the gastrointestinal tract may lead to infection. In this study, which included patients who stayed in our hospital between 2006 and 2011, we looked at the cases of 342 patients with VRE colonization and 19 patients with VRE infection. Vancomycin and carbapenem exposure and intestinal disorders were significantly more common in patients with VRE infection than in those with VRE colonization (p=0.02/0.04/0.04 respectively). Secondary immune deficiency was significantly more common in VRE-colonized patients than in VRE-infected patients (p=0.03). VRE colonization time was significantly related with young age, presence of intravenous catheter, presence of mechanical ventilation, length of hospital stay, length of hospitalization before and after VRE isolation, length of ICU stay before and after VRE isolation, total ICU stay, antibiotic exposure within 3 months, hospitalization (in our hospital) within 3 months, and having a site of infection other than VRE (p=0.01/ 0.01/ 0.04/ <0.001/0.02/ <0.001/ 0.002/ 0.006/ 0.002/ 0.004/ 0.01/ 0.002, respectively). Overall mortality and sepsis was more common in the VRE-infected group than in the VRE-colonized group. Taking into consideration limiting antibiotic usage in potential cases and screening for patients at risk could be beneficial in terms of limiting VRE infection and colonization.
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Enterococcus/aislamiento & purificación , Infecciones por Bacterias Grampositivas/tratamiento farmacológico , Resistencia a la Vancomicina , Vancomicina/uso terapéutico , Adolescente , Antibacterianos/uso terapéutico , Niño , Preescolar , Enterococcus/efectos de los fármacos , Femenino , Estudios de Seguimiento , Infecciones por Bacterias Grampositivas/microbiología , Humanos , Lactante , Recién Nacido , Tiempo de Internación/tendencias , Masculino , Factores de Riesgo , Factores de TiempoRESUMEN
Streptococcus pneumoniae is the most common etiological cause of complicated pneumonia, including empyema. In this study, we investigated the serotypes of S. pneumoniae that cause empyema in children. One hundred fifty-six children who were diagnosed with pneumonia complicated with empyema in 13 hospitals in seven geographic regions of Turkey between 2010 and 2012 were included in this study. Pleural fluid samples were collected by thoracentesis and tested for 14 serotypes/serogroups using a Bio-Plex multiplex antigen detection assay. The serotypes of S. pneumoniae were specified in 33 of 156 samples. The mean age ± the standard deviation of the 33 patients was 6.17 ± 3.54 years (range, 0.6 to 15 years). All of the children were unvaccinated according to the vaccination reports. Eighteen of the children were male, and 15 were female. The serotypes of the non-7-valent pneumococcal conjugated vaccine (non-PCV-7), serotype 1, serotype 5, and serotype 3, were detected in eight (14.5%), seven (12.7%), and five (9.1%) of the samples, respectively. Serotypes 1 and 5 were codetected in two samples. The remaining non-PCV-7 serotypes were 8 (n = 3), 18 (n = 1), 19A (n = 1), and 7F/A (n = 1). PCV-7 serotypes 6B, 9V, 14, 19F, and 23F were detected in nine (16.3%) of the samples. The potential serotype coverages of PCV-7, PCV-10, and PCV-13 were 16.3%, 45.4%, and 60%, respectively. Pediatric parapneumonic empyema continues to be an important health problem despite the introduction of conjugated pneumococcal vaccines. Active surveillance studies are needed to monitor the change in S. pneumoniae serotypes that cause empyema in order to have a better selection of pneumococcal vaccines.
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Empiema/epidemiología , Empiema/microbiología , Neumonía Neumocócica/complicaciones , Streptococcus pneumoniae/clasificación , Streptococcus pneumoniae/aislamiento & purificación , Adolescente , Niño , Preescolar , Femenino , Hospitales , Humanos , Lactante , Masculino , Vacunas Neumococicas/inmunología , Estudios Prospectivos , Serotipificación , Streptococcus pneumoniae/inmunología , Turquía/epidemiologíaRESUMEN
BACKGROUND: The rapid detection of Streptococcus pneumoniae could assist in the management of pneumococcal infections. The Binax NOW S. pneumoniae test is a rapid immunochromatographic test for this purpose. METHODS: Multiplex PCR in parapneumonic pleural effusion fluid (PPEF) and cerebrospinal fluid (CSF) with Binax NOW urinary pneumococcal antigen test (PAT) from 80 children was compared in this study. RESULTS: PAT had a sensitivity of 36.4%, specificity of 97.3%, in CSF. PAT had a sensitivity of 50%, specificity of 81% for parapneumonic pleural effusion fluid. CONCLUSIONS: When rapid management of a serious infection is needed the Binax NOW test could be a reliable method for the exclusion of S. pneumoniae infection.
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Antígenos Bacterianos/orina , Reacción en Cadena de la Polimerasa Multiplex/métodos , Streptococcus pneumoniae/inmunología , Niño , Cromatografía de Afinidad , Humanos , Estudios Prospectivos , Sensibilidad y Especificidad , Streptococcus pneumoniae/genéticaRESUMEN
The age-specific human papillomavirus (HPV) seroprevalence and HPV type distribution in women with normal cervical cytology were studied. Cervical smear samples obtained using liquid-based smears from 582 clinically healthy women aged between 15 and 68 years from five centers from four different regions of Turkey, were studied between February 2010 and January 2011. Overall, 530 of the women with normal cytology were included and the samples were analyzed for the presence of HPV by AmpliTaq. Positive samples were typed further for 37 different HPV genotypes by a line blot assay. HPV was positive in 17.9% of the women. HPV prevalence was highest in the age group of 25-29 years (31.8%), and decreased with increasing age. HPV 16 was the most common type (3.6%) followed by type 6 (2.6%) and type 45 (2.2%). Types 11 and 18 were rare (0.6% and 0.4%, respectively). Among the risk factors, number of sexual partners and parity were positively correlated with HPV positivity. In the present study, a large number of sex partners and high parity increased the risk for HPV infection. The age-specific distribution of HPV in women with normal Pap smears did not show a U-shaped curve in contrast to European countries and the USA.