Hayk Davtyan

ORCID: 0000-0002-9836-4261
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About
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Research Areas
  • Tuberculosis Research and Epidemiology
  • Antibiotic Use and Resistance
  • Pneumonia and Respiratory Infections
  • Pneumocystis jirovecii pneumonia detection and treatment
  • Healthcare Systems and Reforms
  • HIV/AIDS Impact and Responses
  • Bacterial Identification and Susceptibility Testing
  • Antibiotic Resistance in Bacteria
  • Diagnosis and treatment of tuberculosis
  • HIV, TB, and STIs Epidemiology
  • COVID-19 Clinical Research Studies
  • Pharmaceutical and Antibiotic Environmental Impacts
  • COVID-19 epidemiological studies
  • Patient Satisfaction in Healthcare
  • HIV, Drug Use, Sexual Risk
  • Health Systems, Economic Evaluations, Quality of Life
  • Influenza Virus Research Studies
  • Urinary Tract Infections Management
  • Ethics in Clinical Research
  • COVID-19 diagnosis using AI
  • Infection Control and Ventilation
  • Mental Health Treatment and Access
  • Autoimmune and Inflammatory Disorders Research
  • Artificial Intelligence in Healthcare and Education
  • HIV/AIDS drug development and treatment

National Statistical Service of the Republic of Armenia
2013-2022

Heilongjiang Center for Tuberculosis Control and Prevention
2021

Infections by Extended-Spectrum Beta-Lactamase producing Escherichia coli (ESBL-Ec) are on the increase in Ghana, but level of environmental contamination with this organism, which may contribute to growing Antimicrobial Resistance (AMR), is unknown. Using WHO OneHealth Tricycle Protocol, we investigated E. (Ec) and ESBL-Ec two rivers Ghana (Odaw Accra Okurudu Kasoa) that receive effluents from human animal wastewater hotspots over a 12-month period. Concentrations Ec, percent ESBL-Ec/Ec...

10.3390/tropicalmed6020105 article EN cc-by Tropical Medicine and Infectious Disease 2021-06-20

Abstract Background WHO’s directly observed therapy (DOT) strategy for tuberculosis (TB) treatment depends upon a well–organized healthcare system. This study sought to evaluate the effectiveness of self-administered drug intake supported by family member versus in-clinic DOT. Methods open–label, nationally-representative stratified cluster randomized controlled non–inferiority trial with two parallel equal arms involved drug–susceptible pulmonary TB patients in continuation phase. We...

10.1186/s12890-020-1141-y article EN cc-by BMC Pulmonary Medicine 2020-04-25

Management of urinary tract infections is challenged by increasing antimicrobial resistance (AMR) worldwide. In this study, we describe the trends in uropathogens isolated from largest private sector laboratory Ghana over a five-year period. We reviewed positive urine cultures at MDS Lancet Laboratories 2017 to 2021. The proportions with oral and parenteral antimicrobials recommended standard treatment guidelines were determined. proportion multi-drug resistant isolates, ESBL...

10.3390/ijerph192416556 article EN International Journal of Environmental Research and Public Health 2022-12-09
Seung Hyun Park Sung Hwi Hong Kwanghyun Kim Seung Won Lee Dong Keon Yon and 95 more Sun Jae Jung Ziad Abdeen Ramy Abou Ghayda Mohamed Lemine Cheikh Brahim Ahmed Abdulwahed Al Serouri Waleed Al‐Herz Humaid O. Al‐Shamsi Sheeza Ali Kosar Mohamed Ali Oidov Baatarkhuu Henning B. Nielsen Enrico Bernini-Carri Анастасія Бондаренко Ayun Cassell Akway Cham Melvin L.K. Chua Sufia Dadabhai Tchin Darré Hayk Davtyan Elena Dragioti Barbora East Robert J. Edwards Martina Ferioli Tsvetoslav Georgiev Lilian Ghandour Harapan Harapan Po‐Ren Hsueh Saad I. Mallah Aamer Ikram Shigeru Inoue Louis Jacob Slobodan Јаnkovic Umesh Jayarajah Miloš Jeseňák Pramath Kakodkar Nathan Kapata Yohannes Kebede Yousef Khader Meron Kifle David Koh Višnja Kokić Maleš Katarzyna Kotfis Ai Koyanagi James‐Paul Kretchy Sulaiman Lakoh Jinhee Lee Jun Young Lee Maria da Luz Lima Mendonça Lowell Ling Jorge J. Llibre‐Guerra Masaki Machida Richard Makurumidze Ziad A. Memish Iván Mendoza Sergey Moiseev Thomas Nadasdy Chen Nahshon Silvio A. Ñamendys‐Silva Blaise Nguendo Yongsi Amalea Dulcene Nicolasora Zhamilya Nugmanova Hans Oh Atte Oksanen Oluwatomi Owopetu Zeynep Özge Özgüler Konstantinos Parperis Gonzalo Pérez Krit Pongpirul Marius Rademaker Nemanja Radojević Anna Roca Alfonso J. Rodríguez‐Morales Enver Roshi Khwaja Mir Islam Saeed Ranjit Sah Boris Sakakushev Dina E. Sallam Brijesh Sathian Patrick Schober P. Shaik Syed Ali Zoran Simonović Tanu Singhal Natia Skhvitaridze Marco Solmi Kannan Subbaram Kalthoum Tizaoui John Thato Tlhakanelo Júlio Torales J. Smith Torres‐Roman D Tsartsalis Tsolmon Jadamba Duarte Nuno Vieira Sandro G. Viveiros-Rosa Guy Ikambo Wanghi Uwe Wollina

The recently emerged novel coronavirus, "severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2)," caused a highly contagious disease called coronavirus 2019 (COVID-19). It has severely damaged the world's most developed countries and turned into major threat for low- middle-income countries. Since its emergence in late 2019, medical interventions have been substantial, relied on public health measures collectively known as nonpharmaceutical (NPIs). We aimed to centralize accumulative...

10.1002/jmv.28354 article EN Journal of Medical Virology 2022-11-30

Introduction: MDR/RR-TB is a growing problem in Kyrgyzstan. In 2005, the country introduced standard or individualized treatment for 20-24 months. Because of poor outcomes, 2017 short with strict eligibility criteria was introduced. The aim this study to compare characteristics and outcomes patients receiving (9-12 months) those (20-24 2016/2017.
 Methodology: A comparative cohort using routine programmatic data. Characteristics, sputum culture conversion were compared between on...

10.3855/jidc.13757 article EN cc-by The Journal of Infection in Developing Countries 2021-09-29

Antimicrobial Resistance (AMR) and Healthcare Associated Infections (HAIs) are major global public health challenges in our time. This study provides a broader updated overview of AMR trends surgical wards Mulago National Referral Hospital (MNRH) between 2014 2018. Laboratory data on the antimicrobial susceptibility profiles bacterial isolates from 428 patient samples were available. The most common as follows: tracheal aspirates (36.5%), pus swabs (28.0%), blood (20.6%). Klebsiella (21.7%),...

10.3390/tropicalmed6020082 article EN cc-by Tropical Medicine and Infectious Disease 2021-05-19

The COVID-19 pandemic and public health response to the has caused huge setbacks in management of other infectious diseases. In present study, we aimed (i) assess trends numbers samples from patients with influenza-like illness severe acute respiratory syndrome tested for influenza number proportion cases detected 2015−2021 (ii) examine if there were changes during period (2020−2021) compared pre-COVID-19 (2015−2019) three states India. median (IQR) per month was 653 (395−1245), 27 (11−98)...

10.3390/tropicalmed7060110 article EN cc-by Tropical Medicine and Infectious Disease 2022-06-19

To compare the epidemiology of antimicrobial resistance in bacteria isolated from inpatient and outpatient samples Ecuador.A secondary analysis was done data on samples. Data were taken 2018 national surveillance database National Reference Center for Antimicrobial Resistance. The variables included were: age, sex, versus setting, type specimen, bacterial species identified, pattern to antibiotics, geographic area.Data 57 305 isolates study: 48.8% hospitalized patients, 55.7% women, 60.1%...

10.26633/rpsp.2023.14 article EN cc-by-nc-nd Revista Panamericana de Salud Pública 2023-04-15

Patan Hospital, Lalitpur, Nepal.To describe 1) the prevalence of methicillin-resistant Staphylococcus aureus (MRSA) and its antibiotic sensitivity pattern; 2) demographic clinical characteristics associated with MRSA infections; 3) treatment outcomes in-patients infection among patients S. between January 2018 December 2020.This was a cross-sectional study using electronic paper-based hospital records infection.Of 1,804 infection, 1,027 (57%, 95% CI 55-59) had MRSA. The were susceptible to...

10.5588/pha.21.0042 article FR cc-by Public Health Action 2021-11-01

Management of urinary tract infection is challenged by increasing antimicrobial re-sistance (AMR) worldwide. In this study we describe the trends in uropathogens isolated from largest private sector laboratory Ghana over a five-year period. We reviewed positive urine cultures at MDS Lancet Laboratories 2017 to 2021. Proportions with resistance oral and parenteral antimicrobials recommended standard treatment guidelines were determined. The proportion multi-drug resistant isolates, ESBL...

10.20944/preprints202211.0144.v1 preprint EN 2022-11-08

Tuberculosis and tobacco prove to be increasingly apparent world problems. Armenia is a developing country which facing issues related the high rates of consumption. Moreover, it among list multi-drug resistant (MDR) TB burden countries. Treatment success rate in for sputum smear-positive cases never reached World Health Organization's (WHO) target 85% last 15 years. Data from different studies completed across suggests that there an association between smoking negative treatment...

10.1016/j.jctube.2017.04.001 article EN cc-by Journal of Clinical Tuberculosis and Other Mycobacterial Diseases 2017-04-13

Tuberculosis treatment is challenging, especially among people with drug-resistant forms of tuberculosis. The introduction fully oral modified short regimen has a great potential to shorten duration treatment, improve safety and ultimately increase success rate. In 2019 Georgia piloted the shorter in routine programmatic condition. Our study aimed evaluate effectiveness first 25 consecutively enrolled patients rifampicin-resistant tuberculosis proven sensitivity fluoroquinolone without prior...

10.4081/monaldi.2021.1679 article EN cc-by-nc Monaldi Archives for Chest Disease 2021-01-14

The Structured Operational Research and Training Initiative (SORT IT) model has contributed to building research capacity produced evidence for improving public health program performance in countries with limited capacity. involves hands-on mentorship consists of three modules/weeks. It is recognized be an innovative model. In a world changed by COVID-19, where bringing people together not viable, innovative, interactive, web-based, knowledge-transfer platform (e-SORT virtual implementation...

10.3855/jidc.15057 article EN cc-by The Journal of Infection in Developing Countries 2021-09-29

People who inject drugs (PWID) are one of the key populations most vulnerable to HIV infection, with 28 times higher prevalence compared rest population. PWID known have many physical, psychological and lifestyle challenges that can influence access care. Depression is common among living HIV. It has major effect on health-related quality life (HRQoL) influencing adherence antiretroviral therapy. This study was conducted explore how anxiety depression affect HRQoL HIV-positive in Ukraine....

10.3855/jidc.11295 article EN cc-by The Journal of Infection in Developing Countries 2019-07-31

Introduction: Adherence to tuberculosis (TB) treatment as an important determinant for the successful cure of patients can be increased by focusing on patient satisfaction. The objective this study was evaluate satisfaction with TB services, different aspects satisfaction, and demographic, health characteristics associated satisfaction.
 Methodology: Overall 505 randomly selected that received during 2014-2015 in Armenia underwent a cross-sectional telephone survey. Patient items were...

10.3855/jidc.10873 article EN cc-by The Journal of Infection in Developing Countries 2019-05-16

The treatment of childhood tuberculosis can be challenging due to the lack pediatric drug formulations and monitoring drug-toxicity in routine settings. There are no published studies from Uzbekistan on adverse reactions (ADR) associated with anti-tuberculosis children. In this study, we aimed investigate ADR This was a cohort study using secondary program data children treated at city regional clinics Tashkent, Uzbekistan. Of 302 patients evaluated, 135 (44.7%) reported ADR. New registered...

10.3390/ijerph18147574 article EN International Journal of Environmental Research and Public Health 2021-07-16

We assessed the performance of decentralised tuberculosis (TB) out-patient centres in case notification and treatment success Armenia. An average threshold ⩾37/100 000 was seen that had higher numbers presumptive TB patients, where more diagnosed by in-patient facilities contacts were examined. The number doctors and/or specialists at did not influence notification. Onsite smear microscopy significantly associated with a rate ⩾85% for new patients. Addressing specific characteristics lower...

10.5588/pha.14.0038 article EN cc-by Public Health Action 2014-10-21

Introduction: Viral load is one of the most important determinants for HIV transmission. Identification people with high viral (PHVL) can be effective in limiting onward In order to improve identification these individuals within risk networks, we determined a) number PHVL recruited through networks b) their socio-demographic, behavioural and clinical characteristics c) who referred study.
 Methodology: From November 2013 March 2016, Odessa, Ukraine, Transmission Reduction Intervention...

10.3855/jidc.11273 article EN cc-by The Journal of Infection in Developing Countries 2019-07-31

Compliance with treatment guidelines is essential to achieve successful outcomes in tuberculosis patients. Thus, we assessed if multidrug-resistant practices from 2012–2018 Uzbekistan were compliant national terms of regimens prescribed, weight-based drug dosages used, and documentation changes (such as prolongation intensive phase, change drugs, their reasons) the card Consilium form. A total 1481 patients included. Of them, only 25% received standardized per remaining individualized...

10.3390/ijerph18084071 article EN International Journal of Environmental Research and Public Health 2021-04-12

Aim of this study was to evaluate effect supplemental essential phospholipids (EPL) on the treatment efficacy in patients with moderate psoriasis. One hundred and thirty-two subjects over 18 years age diagnosed psoriasis participated study. Patients were randomly assigned two groups. Two types used for patients. First group received conventional which included systemic immunosuppressant, antihistamine, calcium gluconate, topical salicylic acid. Second (n = 67) same EPL. Data comprised age,...

10.1111/dth.15335 article EN Dermatologic Therapy 2022-01-28

There are no previous studies reporting the type and quantity of pesticides for farming from Sierra Leone impact Ebola or COVID-19 on importation. This study reviewed imported by Leone, Ministry Agriculture Forestry (MAF), between 2010-2021. It was a descriptive using routinely collected importation data. We found MAF only during 2010, 2014 2021, in response to growing food insecurity associated with outbreaks. Results showed insecticide increased 6230 L 2010 51,150 antimicrobial (including...

10.3390/ijerph19084792 article EN International Journal of Environmental Research and Public Health 2022-04-15
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