Meliha Cagla Sonmezer

Dr. Meliha Cagla Sonmezer

Hacettepe University Faculty of Medicine
orcid

Research Focus & Metrics

Academic Career Length

14Years (2013-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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21 December 2022 in Vaccines
Verified
Journal Article
Open access
PDF file
TSTaha Koray Sahin
Taha Koray Sahin
Enes ErulEnes Erul
Enes Erul
MAMelek Seren Aksun
Melek Seren Aksun
MSMeliha Cagla Sonmezer
Meliha Cagla Sonmezer
SUSerhat Unal
Serhat Unal
Murat AkovaMurat Akova
Murat Akova
Background: In May 2022, the monkeypox virus outbreak in multiple countries on various continents marked a potential resurgence of the disease as a global health issue. Considering the crucial role of physicians in mitigating the monkeypox outbreak, we sought to evaluate physicians’ knowledge, attitude, concerns, and vaccine acceptance for monkeypox, in the shadow of the COVID-19 pandemic. Methods: A large-scale, cross-sectional survey was conducted among 283 physicians between 20 August–2 September 2022, in Turkey. The participants’ sociodemographic characteristics, knowledge, attitudes, concerns, and vaccine acceptance toward monkeypox infection were collected via a questionnaire. Results: Our study revealed that 32.5% of physicians achieved a good level of knowledge; similarly, 31.4% of the physicians planned to have the monkeypox vaccine. Multivariate binary logistic regression analysis showed that female physicians (p = 0.031) and older people (≥30 vs. <30) were more likely to be knowledgeable about monkeypox (p = 0.007). We found that participants from divisions of internal medicine (p = 0.033) who knew about the monkeypox disease during medical school or residency (p = 0.005) and were previously exposed to COVID-19 disease (p = 0.005) were more likely to have a good knowledge score of monkeypox. We also found that physicians with a good knowledge score were more worried about monkeypox compared to COVID-19 (AOR: 2.22; 95% CI:1.13–4.33; p = 0.019). Additionally, those who had information on monkeypox during medical education (AOR = 2.16, 95% CI = 1.10–4.21; p = 0.024) were more likely to receive the smallpox vaccine to prevent monkeypox viral infection when available. Conclusions: The present study pointed out that physicians in Turkey have unsatisfactory levels of knowledge about the emerging monkeypox. This study results can impede attempts to detect and manage cases of monkeypox and should be addressed through appropriate and timely awareness and educational programs, alerts, and seminars. These might serve as the basis for policymakers’ decisions about promoting national monkeypox vaccination strategies and addressing potential vaccine hesitancy and misinformation when needed.

11 February 2022 in Vaccines
Verified
Journal Article
Open access
PDF file
MSMeliha Cagla Sonmezer
Meliha Cagla Sonmezer
TSTaha Koray Sahin
Taha Koray Sahin
Enes ErulEnes Erul
Enes Erul
FCFurkan Sacit Ceylan
Furkan Sacit Ceylan
MHMuhammed Yusuf Hamurcu
Muhammed Yusuf Hamurcu
SUSerhat Unal
Serhat Unal
Background: The coronavirus disease 2019 (COVID-19) pandemic continues to wreak havoc on lives and ravage the world. Several vaccines have been approved for use against COVID-19; however, there may be hesitancy and negative perceptions towards vaccination, which may reduce the willingness to be vaccinated. Further, studies assessing the current perception toward COVID-19 vaccination are scarce. This study aimed to assess community knowledge, attitudes, and perceptions regarding COVID-19 vaccines among the general population of Turkey. Methods: A cross-sectional survey was carried out among 1009 adult participants from the 13–20 April 2021. Demographic data were collected, and attitudes and perceptions toward COVID-19 vaccines were evaluated. A multivariable regression analysis was performed to identify the factors predicting perception towards COVID-19 vaccinations. Results: Just over half of participants were male (52.6%) and the majority of respondents were aged between 30 and 39 years (33.8%). Our study revealed that 62.7% of participants had positive perceptions of COVID-19 vaccines. Logistic regression analysis results showed that older people (≥30 vs. <30) were less likely to have a positive perception towards COVID-19 vaccines (OR = 0.70, 95% CI = 0.51–0.94). We also found participants who had a previous history of influenza vaccines (OR = 2.01, 95% CI = 1.43–2.84), bachelor’s degrees or above (OR = 1.47, 95% CI = 1.12–1.91), and a personal history of COVID-19 (OR = 1.58, 95% CI = 1.10–2.26) were more likely to have a positive perception regarding COVID-19 vaccines. Conclusion: The proportion of the general population in Turkey who believe in COVID-19 vaccine effectiveness is not inferior to that of other countries. However, the low positive perception even among the population applying for vaccination indicates that understanding the perception of the general population and its influencing factors may contribute to developing a strategy for improving vaccination rates by addressing these factors.

30 October 2019 in The Journal of Infection in Developing Countries
Verified
Journal Article
Open access
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EKEsra Kaya Kılıç
Esra Kaya Kılıç
CBCemal Bulut
Cemal Bulut
MSMeliha Cagla Sonmezer
Meliha Cagla Sonmezer
ÖOÖzlem Ozel
Özlem Ozel
CHCigdem Ataman Hatipoglu
Cigdem Ataman Hatipoglu
SKSami Kınıklı
Sami Kınıklı
Introduction: Linezolid is a synthetic antimicrobial agent with a broad spectrum of activity against virtually all Gram-positive bacteria. Although linezolid is generally well tolerated, the prolonged use of linezolid can lead to myelosuppression, including neutropenia, thrombocytopenia, and anemia. The aim of this study was investigating the risk factors for thrombocytopenia in patients who received linezolid therapy. Methodology: This retrospective study was performed on patients who received linezolid therapy between July 2007 and December 2017. Thrombocytopenia was defined as either a platelets count of < 100×109/L or a 25% reduction from the baseline platelet count. Results: A total of 371 patients, (198 (53%) male and 173(47%) female were included into the study. Mean duration of therapy was 12.81 ± 5.19 days. Linezolid-induced thrombocytopenia was detected in a total of 111 patients. Using the univariate analysis advanced sex, serum urea concentration, baseline platelet level and low eGFR value were found to be risk factors for linezolid associated thrombocytopenia (p < 0.05). According to a multivariate analysis, patients undergoing carbapenem treatment combination therapy (p = 0.003) and with a baseline platelet level of < 200×109/L (p = 0.00) were found to have a high risk of developing thrombocytopenia. Conclusions: Several factors may influence of linezolid associated thrombocytopenia. Platelet count should be monitored during therapy and thrombocytopenia should be kept in mind in patients with baseline platelet level of < 200×109/L, low eGFR, linezolid-carbapenem combination therapy.

30 August 2016 in Canadian Journal of Infectious Diseases and Medical Microbiology
Verified
Journal Article
Open access
PDF file
MSMeliha Cagla Sonmezer
Meliha Cagla Sonmezer
GEGunay Ertem
Gunay Ertem
FEFatma Sebnem Erdinc
Fatma Sebnem Erdinc
EKEsra Kaya Kilic
Esra Kaya Kilic
NTNecla Tulek
Necla Tulek
CHCigdem Hatipoglu
Cigdem Hatipoglu
Background.Pseudomonas aeruginosa(P. aeruginosa) is resistant to various antibiotics and can cause serious nosocomial infections with high morbidity and mortality. In this clinical study, we investigated the risk factors in patients who were diagnosed withP. aeruginosa-related nosocomial infection.Methods. A retrospective case control study including patients withP. aeruginosa-related nosocomial infection. Patients who were resistant to any of the six antibiotics (imipenem, meropenem, piperacillin-tazobactam, ciprofloxacin, amikacin, and ceftazidime) constituted the study group.Results. One hundred and twenty isolates were isolated. Various risk factors were detected for each antibiotic in the univariate analysis. In the multivariate analysis, previous cefazolin use was found as an independent risk factor for the development of imipenem resistance (OR = 3.33; CI 95% [1.11–10.0];p= 0.03), whereas previous cerebrovascular attack (OR = 3.57; CI 95% [1.31–9.76];p= 0.01) and previous meropenem use (OR = 4.13; CI 95% [1.21–14.07];p= 0.02) were independent factors for the development of meropenem resistance. For the development of resistance to ciprofloxacin, hospitalization in the neurology intensive care unit (OR = 4.24; CI 95% [1.5–11.98];p= 0.006) and mechanical ventilator application (OR = 11.7; CI 95% [2.24–61.45];p= 0.004) were independent risk factors.Conclusion. The meticulous application of contact measures can decrease the rate of nosocomial infections.

18 July 2022 in Vaccines
Verified
Journal Article
Open access
PDF file
MSMeliha Cagla Sonmezer
Meliha Cagla Sonmezer
GDGulcin Telli Dizman
Gulcin Telli Dizman
Enes ErulEnes Erul
Enes Erul
TSTaha Koray Sahin
Taha Koray Sahin
TSTuğba Saricaoglu
Tuğba Saricaoglu
Murat AkovaMurat Akova
Murat Akova
Coronavirus disease 2019 (COVID-19) continues to pose a threat to public health with the potential for the emergence of new variants. Vaccines are the milestones to control and slow down the damage of the pandemic. As of January 2021, a two-dose regimen with CoronaVac was authorized in Turkey. Due to the waning seroprevalence rate of SARS-CoV-2 over time, BNT162b2 or CoronaVac has been administered as the third dose following a two-dose CoronaVac regimen as a national vaccination policy. As of 14 January 2021, 5243 volunteers who received two doses of the CoronaVac vaccine at Hacettepe University Adult Vaccine Center were followed prospectively. In our study, relative vaccine effectiveness (VEff) for the third dose of the CoronaVac was 58.24% and 87.27% for BNT162b2 in preventing symptomatic COVID-19 cases. There were no hospitalizations, intensive care unit admissions, or deaths in third-dose booster groups with either BNT162b2 or CoronaVac, yielding 100% effectiveness. Both homologous or heterologous third-dose boosters provided further protection against severe COVID-19 and should be prioritized as an effective strategy to combat the COVID-19 pandemic.

26 August 2021 in Journal of Fungi
Verified
Journal Article
Open access
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ASAli Korhan Sig
Ali Korhan Sig
MSMeliha Cagla Sonmezer
Meliha Cagla Sonmezer
Dolunay GülmezDolunay Gülmez
Dolunay Gülmez
SDSerhat Duyan
Serhat Duyan
OUOmrum Uzun
Omrum Uzun
SASevtap Arikan-Akdagli
Sevtap Arikan-Akdagli
The frequency of invasive fungal infections shows a rising trend as well as a high morbidity and mortality. Among the causative agents, a shift toward the non-albicans Candida species including Candida glabrata species complex is being observed in several centers. Echinocandin resistance is increasingly published; however, isolates presenting with an in vitro resistance have not yet been reported from Turkey. We, herein, report the first FKS mutant and phenotypically echinocandin-resistant C. glabrata clinical strains from a single center in Turkey. In a 43-year-old female patient, several enterocutaneous fistulae developed after a long term hospitalization period and several complicated surgeries. She eventually required parenteral nutrition via a tunneled central venous catheter (CVC). Following a number of bacteremic and fungemic episodes as well as intensive antimicrobial interventions (including fluconazole, caspofungin and anidulafungin), a CVC-related candidemia caused by C. glabrata was detected. The isolated strain yielded high minimum inhibitory concentration (MIC) values for echinocandins and was categorized as resistant. A resistance-related mutation was detected in FKS2 HS1 (D666V). Blood cultures remained negative after the removal of the CVC and treatment with caspofungin and high-dose fluconazole. Following this first case, two additional C. glabrata strains with high echinocandin MICs were isolated from the urine cultures of two unrelated patients from different wards with different mutations in FKS2 HS1 (S663P and delF659). Our findings indicate that routine antifungal susceptibility testing is crucial and underlines the need for attention for the increasing trend of acquired echinocandin resistance in C. glabrata.