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  1. Article ; Online: Neurologic Complications of Rotavirus Infections.

    Gökdöl, Muhammed Yasin / Bayhan, Gülsüm İclal

    The Pediatric infectious disease journal

    2023  Volume 43, Issue 1, Page(s) e25

    MeSH term(s) Humans ; Infant ; Rotavirus Infections/complications ; Rotavirus ; Nervous System Diseases/complications
    Language English
    Publishing date 2023-11-15
    Publishing country United States
    Document type Journal Article
    ZDB-ID 392481-6
    ISSN 1532-0987 ; 0891-3668
    ISSN (online) 1532-0987
    ISSN 0891-3668
    DOI 10.1097/INF.0000000000004126
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    Zs.A 1852: Show issues Location:
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    ab Jg. 2022: Lesesaal (EG)

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  2. Article ; Online: Effectiveness of CoronaVac in preventing COVID-19 in healthcare workers.

    Bayhan, Gulsum Iclal / Guner, Rahmet

    Human vaccines & immunotherapeutics

    2022  Volume 18, Issue 1, Page(s) 2020017

    Abstract: The CoronaVac vaccine was found to be effective against symptomatic COVID-19 and protective against severe disease in phase 3 studies. However, there are little data about its effectiveness in real-world conditions. The aim of the current study was to ... ...

    Abstract The CoronaVac vaccine was found to be effective against symptomatic COVID-19 and protective against severe disease in phase 3 studies. However, there are little data about its effectiveness in real-world conditions. The aim of the current study was to investigate the protective effect of the CoronaVac vaccine in health-care workers (HCWs) in Turkey, a country where CoronaVac is widely used. The questionnaire was sent to all employees in the form of a survey link by using a telephone application. In the survey, HCWs were asked about demographic characteristics; CoronaVac vaccination status, history of a COVID-19 infection, whether COVID-19 infection was before or after the CoronaVac vaccination; the time between being vaccinated and the COVID-19 infection; the clinical pictures of COVID-19 infection. Those who experienced COVID-19 before vaccination were compared with the breakthrough cases in terms of demographic and clinical features. A total of 628 HCW agreed to participate in the study. A total of 536 (85.3%) volunteers had been vaccinated and 92 (14.6%) had not been vaccinated against COVID-19 with CoronaVac. There was a history of COVID-19 infection in 234 (37.2%) subjects and 188 (35%) had been vaccinated and 46 (50%) not vaccinated. The rate experiencing COVID-19 disease was significantly lower in the vaccinated than the unvaccinated volunteers. The rate of breakthrough cases after CoronaVac was found to be 7%. The hospitalization rate was similar in the breakthrough cases and those who had COVID-19 before CoronaVac vaccination. The results of our study indicate that CoronaVac provides protection against COVID-19.
    MeSH term(s) COVID-19/prevention & control ; COVID-19 Vaccines ; Health Personnel ; Humans ; SARS-CoV-2 ; Vaccines
    Chemical Substances COVID-19 Vaccines ; Vaccines
    Language English
    Publishing date 2022-02-16
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2664176-8
    ISSN 2164-554X ; 2164-5515
    ISSN (online) 2164-554X
    ISSN 2164-5515
    DOI 10.1080/21645515.2021.2020017
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  3. Article ; Online: Tic Disorder in an 8-Year-old Boy With Borreliosis.

    Ozdemir, Burak / Bayhan, Gulsum Iclal

    The Pediatric infectious disease journal

    2021  Volume 40, Issue 11, Page(s) e454

    MeSH term(s) Child ; Humans ; Lyme Neuroborreliosis/complications ; Lyme Neuroborreliosis/diagnosis ; Male ; Tic Disorders/microbiology
    Language English
    Publishing date 2021-07-22
    Publishing country United States
    Document type Case Reports ; Letter
    ZDB-ID 392481-6
    ISSN 1532-0987 ; 0891-3668
    ISSN (online) 1532-0987
    ISSN 0891-3668
    DOI 10.1097/INF.0000000000003252
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    Zs.A 1852: Show issues Location:
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  4. Article ; Online: Acute Kidney Injury in Multisystem Inflammatory Syndrome in Children (MIS-C).

    Ozlu, Sare Gulfem / Bayhan, Gulsum Iclal

    SN comprehensive clinical medicine

    2021  Volume 3, Issue 1, Page(s) 36–37

    Language English
    Publishing date 2021-01-03
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2947211-8
    ISSN 2523-8973 ; 2523-8973
    ISSN (online) 2523-8973
    ISSN 2523-8973
    DOI 10.1007/s42399-020-00722-1
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  5. Article ; Online: Evaluation of the neutralizing antibody response against the omicron variant produced by heterologous or hybrid immunity: How does the fifth dose of COVID-19 vaccine affect the neutralizing antibody response?

    Bayhan, Gülsüm İclal / Güner, Rahmet / Yahşi, Aysun / Özkul, Aykut

    The Journal of infection

    2023  Volume 87, Issue 3, Page(s) e61–e62

    MeSH term(s) Humans ; COVID-19 Vaccines ; COVID-19/prevention & control ; SARS-CoV-2 ; Adaptive Immunity ; Antibodies, Neutralizing ; Antibodies, Viral ; Vaccination
    Chemical Substances COVID-19 Vaccines ; Antibodies, Neutralizing ; Antibodies, Viral
    Language English
    Publishing date 2023-07-04
    Publishing country England
    Document type Letter ; Research Support, Non-U.S. Gov't ; Comment
    ZDB-ID 424417-5
    ISSN 1532-2742 ; 0163-4453
    ISSN (online) 1532-2742
    ISSN 0163-4453
    DOI 10.1016/j.jinf.2023.07.001
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  6. Article ; Online: Case Series With Streptococcus pyogenes- related Toxic Shock Syndrome in the Post-COVID Period.

    Coşkun, Zehra Nihan / Erat, Tuğba / Gülhan, Belgin / Koçkuzu, Esra / Bayhan, Gülsüm İclal / Parlakay, Aslinur Özkaya

    The Pediatric infectious disease journal

    2023  Volume 42, Issue 6, Page(s) e217–e218

    MeSH term(s) Humans ; Streptococcus pyogenes ; Shock, Septic ; COVID-19 ; Streptococcal Infections/complications ; Syndrome
    Language English
    Publishing date 2023-02-07
    Publishing country United States
    Document type Letter
    ZDB-ID 392481-6
    ISSN 1532-0987 ; 0891-3668
    ISSN (online) 1532-0987
    ISSN 0891-3668
    DOI 10.1097/INF.0000000000003850
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    Zs.A 1852: Show issues Location:
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  7. Article ; Online: Case Series With Streptococcus pyogenes -related Toxic Shock Syndrome in the Post-COVID Period [RETRACTED].

    Coşkun, Zehra Nihan / Erat, Tuğba / Gülhan, Belgin / Koçkuzu, Esra / Bayhan, Gülsüm İclal / Parlakay, Aslinur Özkaya

    The Pediatric infectious disease journal

    2023  

    Language English
    Publishing date 2023-10-30
    Publishing country United States
    Document type Journal Article
    ZDB-ID 392481-6
    ISSN 1532-0987 ; 0891-3668
    ISSN (online) 1532-0987
    ISSN 0891-3668
    DOI 10.1097/INF.0000000000004152
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    Zs.A 1852: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
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    ab Jg. 2022: Lesesaal (EG)

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  8. Article ; Online: Is SARS-CoV-2 Now More Like the Seasonal Coronaviruses Following Its Evolution?

    Bayhan, Gülsüm İclal / Altan, Işil / Mercan, Halise / Özkaya Parlakay, Aslinur / Coşkun, Zehra Nihan / Dinç, Bedia / Gülhan, Belgin / Kanik-Yüksek, Saliha

    The Pediatric infectious disease journal

    2024  

    Abstract: Background: SARS-CoV-2 has evolved significantly since the beginning of the COVID-19 pandemic. COVID-19 mortality has decreased due to increased population immunity and possibly the reduced intrinsic severity of the new variants. SARS-CoV-2 is now ... ...

    Abstract Background: SARS-CoV-2 has evolved significantly since the beginning of the COVID-19 pandemic. COVID-19 mortality has decreased due to increased population immunity and possibly the reduced intrinsic severity of the new variants. SARS-CoV-2 is now considered an endemic virus, but the extent to which its clinical findings resemble those of seasonal coronaviruses (sCoV) is not fully understood.
    Methods: Pediatric patients under 18 years of age who were sent for SARS-CoV-2 polymerase chain reaction real-time reverse transcription polymerase chain reaction between January 1, 2022 and January 14, 2023 and whose results were positive were included in this study. To include only symptomatic COVID-19 patients in the study, asymptomatic patients who were positive in their screening tests were excluded. For the sCoV patients' group, patients who had a respiratory viral polymerase chain reaction assay between January 10, 2022 and January 11, 2023 and were positive for any type of sCoV were included in the study. The 2 groups were compared for clinical and laboratory characteristics.
    Results: The study included 213 patients with COVID-19 and 194 patients with sCoV infection. Fever was a more common symptom in patients with COVID-19. sCoV was associated with lower respiratory involvement while increasing age was protective. The likelihood of hospitalization was decreased by increasing age but increased by the presence of comorbid conditions and lower respiratory tract involvement. The type of virus had no effect on the likelihood of hospitalization.
    Conclusions: In conclusion, sCoV infections carry a higher risk for lower respiratory involvement than COVID-19, and COVID-19 has a milder course than sCoV infections in children.
    Language English
    Publishing date 2024-03-21
    Publishing country United States
    Document type Journal Article
    ZDB-ID 392481-6
    ISSN 1532-0987 ; 0891-3668
    ISSN (online) 1532-0987
    ISSN 0891-3668
    DOI 10.1097/INF.0000000000004327
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    Zs.A 1852: Show issues Location:
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  9. Article ; Online: Radiographic findings of adenoviral pneumonia in children.

    Bayhan, Gülsüm İclal / Gülleroğlu, Nadide Başak / Çetin, Selin / Erat, Tuğba / Yıldız, Selin / Özen, Seval / Konca, Hatice Kübra / Yahşi, Aysun / Dinç, Bedia

    Clinical imaging

    2024  Volume 108, Page(s) 110111

    Abstract: Objective: Adenovirus pneumonia is a common cause of community-acquired pneumonia in children and can mimic bacterial pneumonia, but there are few publications on its radiographic features. This study has evaluated the chest radiography findings of ... ...

    Abstract Objective: Adenovirus pneumonia is a common cause of community-acquired pneumonia in children and can mimic bacterial pneumonia, but there are few publications on its radiographic features. This study has evaluated the chest radiography findings of community-acquired adenovirus pneumonia in children. The frequency of radiological findings mimicking bacterial pneumonia was investigated. The clinical features of patients with adenovirus pneumonia possessing radiological findings mimicking bacterial pneumonia were also evaluated.
    Materials and methods: The chest radiographs of patients diagnosed with adenovirus pneumonia were retrospectively reviewed. The chest radiographs were interpreted independently by a pediatric infectious disease specialist and a pediatric radiologist. Chest radiography findings mimicking bacterial pneumonia (bacterial-like) were specified as consolidation +/- pleural effusion. Other findings on chest radiography or a completely normal chest X-ray were specified as findings that were compatible with "typical viral pneumonia".
    Results: A total of 1407 patients were positive for adenovirus with respiratory multiplex PCR. The 219 patients who met the study criteria were included in the study. Chest radiographs were normal in 58 (26.5 %) patients. The chest radiograph findings mimicked bacterial pneumonia in 41 (18.7 %) patients.
    Conclusion: Adenovirus pneumonia occurs predominantly in children aged five years and younger, as with other viral pneumonias. The radiographic findings in adenovirus pneumonia are predominantly those seen in viral pneumonia. Increasing age and positivity for only adenovirus without other viruses on respiratory multiplex PCR were associated with the chest radiograph being more likely to be "bacterial-like". Adenovirus may lead to lobar/segmental consolidation at a rate that is not very rare.
    MeSH term(s) Child ; Humans ; Retrospective Studies ; Pneumonia, Viral/diagnostic imaging ; Pneumonia/diagnostic imaging ; Radiography ; Pneumonia, Bacterial/complications ; Pneumonia, Bacterial/diagnostic imaging ; Pleural Effusion
    Language English
    Publishing date 2024-02-13
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1028123-x
    ISSN 1873-4499 ; 0899-7071
    ISSN (online) 1873-4499
    ISSN 0899-7071
    DOI 10.1016/j.clinimag.2024.110111
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    Zs.A 1469: Show issues Location:
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  10. Article ; Online: Assessment of the Choroidal Vascular Structure in Multisystem Inflammatory Syndrome in Children.

    Icoz, Mehmet / Arıkan Yorgun, Mucella / Bayhan, Gulsum Iclal / Gurturk Icoz, Sule Gokcek / Yahsi, Aysun

    Journal of pediatric ophthalmology and strabismus

    2023  Volume 61, Issue 2, Page(s) 120–126

    Abstract: Purpose: To evaluate the choroidal vascular structure in cases of multisystem inflammatory syndrome in children (MIS-C).: Methods: This prospective study included 38 eyes of 19 patients with MIS-C and 60 eyes of 30 healthy participants. Optical ... ...

    Abstract Purpose: To evaluate the choroidal vascular structure in cases of multisystem inflammatory syndrome in children (MIS-C).
    Methods: This prospective study included 38 eyes of 19 patients with MIS-C and 60 eyes of 30 healthy participants. Optical coherence tomography (OCT) imaging was performed at 1 month after diagnosis in the MIS-C group. Using enhanced depth imaging OCT, choroidal thickness was measured in the subfoveal, nasal, and temporal quadrants at 500 and 1,500 µm distances from the fovea (SCT, N
    Results: The age and sex distributions of the two groups without any ophthalmologic pathology were similar (
    Conclusions: This is the first study to evaluate CVI in patients with MIS-C. It was observed that the choroidal vascular structure could be affected in the early period of MIS-C, as shown by a decrease in the CVI value and luminal vascular area. OCT can be used to monitor ocular vascular changes in these patients.
    MeSH term(s) Child ; Humans ; Prospective Studies ; Choroid/pathology ; Systemic Inflammatory Response Syndrome/diagnosis ; Systemic Inflammatory Response Syndrome/pathology ; COVID-19/complications ; Tomography, Optical Coherence/methods
    Language English
    Publishing date 2023-10-26
    Publishing country United States
    Document type Journal Article
    ZDB-ID 800921-1
    ISSN 1938-2405 ; 0191-3913
    ISSN (online) 1938-2405
    ISSN 0191-3913
    DOI 10.3928/01913913-20230809-01
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