Personal information

Canada, United Kingdom, Jordan, United States

Activities

Employment (10)

Independent: Toronto, Ontario, CA

2018-01-01 to present | Consultant Epidemiologist (Operational research and field epidemiology in crises)
Employment
Source: Self-asserted source
Ruwan Ratnayake

International Rescue Committee: New York, NY, US

2011-07-01 to 2017-12-31 | Senior Epidemiologist (Health Unit)
Employment
Source: Self-asserted source
Ruwan Ratnayake

Biomed Central Ltd: London, London, GB

2012-02 to 2016-08 | Editor-in-Chief (Conflict and Health)
Employment
Source: Self-asserted source
Ruwan Ratnayake

World Health Organization: Juba, SS

2014-07 to 2014-08 | Epidemiologist (cholera) (Emergency Response)
Employment
Source: Self-asserted source
Ruwan Ratnayake

World Health Organization: Port au Prince, HT

2011-02 to 2011-04 | Epidemiologist (cholera) (Emergency Response)
Employment
Source: Self-asserted source
Ruwan Ratnayake

Public Health Agency of Canada: Ottawa, ON, CA

2009-02 to 2011-04 | Field Epidemiologist (Canadian Field Epidemiology Program)
Employment
Source: Self-asserted source
Ruwan Ratnayake

World Health Organization: Port of Spain, TT

2009-06 to 2009-08 | Epidemiologist (H1N1 influenza pandemic) (Emergency Response)
Employment
Source: Self-asserted source
Ruwan Ratnayake

Centre for Research on the Epidemiology of Disasters: Brussels, BE

2008-01 to 2009-01 | Epidemiologist (Complex Humanitarian Emergencies)
Employment
Source: Self-asserted source
Ruwan Ratnayake

United Nations High Commissioner for Refugees: Amman, JO

2008-11 to 2008-11 | Consultant on health information systems for the Iraq crisis
Employment
Source: Self-asserted source
Ruwan Ratnayake

International Organization for Migration: Hanoi, VN

2005-08 to 2006-02 | Health Officer (Health Department)
Employment
Source: Self-asserted source
Ruwan Ratnayake

Education and qualifications (5)

London School of Hygiene and Tropical Medicine: London, London, GB

2018-09-20 to present | Ph.D. (Infectious Disease Epidemiology)
Education
Source: Self-asserted source
Ruwan Ratnayake

Public Health Agency of Canada: Ottawa, Ontario, CA

2009-02-01 to 2011-04-30 | Certification from the Canadian Field Epidemiology Training Program (F.E.T.P.) (Canadian Field Epidemiology Program)
Education
Source: Self-asserted source
Ruwan Ratnayake

Johns Hopkins Bloomberg School of Public Health: Baltimore, MD, US

2003-09-01 to 2005-06-30 | Master of Health Science (M.H.S.) (Mental Health, International Health)
Education
Source: Self-asserted source
Ruwan Ratnayake

Johns Hopkins University Bloomberg School of Public Health: Baltimore, MD, US

2003-09-01 to 2004-06-30 | Certificate in Humanitarian Assistance (Center for International Emergency, Disaster and Refugee Studies)
Education
Source: Self-asserted source
Ruwan Ratnayake

University of Toronto: Toronto, Ontario, CA

1999-09-01 to 2003-06-30 | Honours Bachelor of Science (Hons. B.Sc.) (Physiology, Health Studies, minor: Psychology)
Education
Source: Self-asserted source
Ruwan Ratnayake

Works (50 of 57)

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Spatiotemporal Modeling of Cholera, Uvira, Democratic Republic of the Congo, 2016-2020

Emerging Infectious Diseases
2024 | Journal article
Contributors: Ratnayake, Ruwan; Knee, Jackie; Cumming, Oliver; Saidi, Jaime Mufitini; Rumedeka, Baron Bashige; Finger, Flavio; Azman, Andrew S; Edmunds, W John; Checchi, Francesco; Gallandat, Karin
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Spatiotemporal modelling of cholera and implications for its control, Uvira, Democratic Republic of the Congo

MedRxiv
2023 | Journal article
Contributors: Ratnayake, Ruwan; Knee, Jacqueline; Cumming, Oliver; Saidi, Jaime Mufitini; Rumedeka, Baron Bashige; Finger, Flavio; Azman, Andrew S; Edmunds, W.John; Checchi, Francesco; Gallandat, Karin
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Country differences in transmissibility, age distribution and case-fatality of SARS-CoV-2: a global ecological analysis

International Journal of Infectious Diseases
2022 | Journal article
Contributors: Favas, Caroline; Jarrett, Prudence; Ratnayake, Ruwan; Watson, Oliver J.; Checchi, Francesco
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Effectiveness of case-area targeted interventions including vaccination on the control of epidemic cholera: protocol for a prospective observational study

BMJ Open
2022 | Journal article
Contributors: Ratnayake, Ruwan; Peyraud, Nicolas; Ciglenecki, Iza; Gignoux, Etienne; Lightowler, Maria; Azman, Andrew S.; Gakima, Primitive; Ouamba, Jean Patrick; Sagara, Joseph Amadomon; Ndombe, Rollin et al.
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Heavy-tailed sexual contact networks and monkeypox epidemiology in the global outbreak, 2022

Science
2022 | Journal article
Contributors: Endo, Akira; Murayama, Hiroaki; Abbott, Sam; Ratnayake, Ruwan; Pearson, Carl A. B.; Edmunds, W. John; Fearon, Elizabeth; Funk, Sebastian
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Inference is bliss: Simulation for power estimation for an observational study of a cholera outbreak intervention

PLoS Neglected Tropical Diseases
2022 | Journal article
Contributors: Ratnayake, Ruwan; Checchi, Francesco; Jarvis, Christopher; Edmunds, W. John; Finger, Flavio
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What we do know (and could know) about estimating population sizes of internally displaced people

Journal of Migration and Health
2022 | Journal article
Contributors: Ratnayake, Ruwan; Abdelmagid, Nada; Dooley, Claire
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Heavy-tailed sexual contact networks and the epidemiology of monkeypox outbreak in non-endemic regions, May 2022

[]
2022-06-13 | Preprint
Source: Self-asserted source
Ruwan Ratnayake
grade
Preferred source (of 2)‎

A mixed-methods investigation to understand and improve the scaled-up infection prevention and control in primary care health facilities during the Ebola virus disease epidemic in Sierra Leone

BMC Public Health
2021 | Journal article
Contributors: Ho, Lara Shiu-yi; Ratnayake, Ruwan; Ansumana, Rashid; Brown, Hannah
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Adaptation of a community health volunteer strategy for the management of hypertension and diabetes and detection of COVID-19 disease: a progamme for Syrian refugees in northern Jordan

The Lancet Global Health
2021 | Journal article
Contributors: Ratnayake, Ruwan; Rawashdeh, Fatma; Hani, Mohammad Bani; Zoubi, Saleem; Fawad, Muhammad; Abualrub, Raeda; Al-Ali, Nahla; Goyal, Ravi; Al-Amire, Khaldoun; AlMaaitah, Rowaida et al.
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Early Experiences in the Integration of Non-communicable Diseases into Emergency Primary Health Care, Beni Region, Democratic Republic of the Congo

Annals of Global Health
2021 | Journal article
Contributors: Ratnayake, Ruwan; Wittcoff, Alison; Majaribu, John; Nzweve, Jean-Pierre; Katembo, Lambert; Kasonia, Kambale; Nzanzu, Adelard Kalima; Kiapi, Lilian; Ngoy, Pascal
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Highly targeted spatiotemporal interventions against cholera epidemics, 2000-19: a scoping review

The Lancet Infectious Diseases
2021 | Journal article
Contributors: Ratnayake, Ruwan; Finger, Flavio; Azman, Andrew S.; Lantagne, Daniele; Funk, Sebastian; Edmunds, W. John; Checchi, Francesco
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Integrating community health volunteers into non-communicable disease management among Syrian refugees in Jordan: a causal loop analysis

BMJ Open
2021 | Journal article
Contributors: Parmar, Parveen K.; Rawashdah, Fatma; Al-Ali, Nahla; Abu Al Rub, Raeda; Fawad, Muhammad; Al Amire, Khaldoun; Al-Maaitah, Rowaida; Ratnayake, Ruwan
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Access to Care and Prevalence of Hypertension and Diabetes Among Syrian Refugees in Northern Jordan

JAMA Network Open
2020 | Journal article
Contributors: Ratnayake, Ruwan; Rawashdeh, Fatma; AbuAlRub, Raeda; Al-Ali, Nahla; Fawad, Muhammad; Bani Hani, Mohammad; Goyal, Ravi; Greenough, P. Gregg; Al-Amire, Khaldoun; AlMaaitah, Rowaida et al.
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Considerations for planning COVID-19 treatment services in humanitarian responses

Conflict and Health
2020 | Journal article
Contributors: Garry, Sylvia; Abdelmagid, Nada; Baxter, Louisa; Roberts, Natalie; de Waroux, Olivier le Polain; Ismail, Sharif; Ratnayake, Ruwan; Favas, Caroline; Lewis, Elizabeth; Checchi, Francesco
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COVID-19 control in low-income settings and displaced populations: what can realistically be done?

Conflict and Health
2020 | Journal article
Contributors: Dahab, Maysoon; van Zandvoort, Kevin; Flasche, Stefan; Warsame, Abdihamid; Ratnayake, Ruwan; Favas, Caroline; Spiegel, Paul B.; Waldman, Ronald J.; Checchi, Francesco
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Early detection of cholera epidemics to support control in fragile states: estimation of delays and potential epidemic sizes

BMC Medicine
2020 | Journal article
Contributors: Ratnayake, Ruwan; Finger, Flavio; Edmunds, W. John; Checchi, Francesco
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Estimating the infection and case fatality ratio for coronavirus disease (COVID-19) using age-adjusted data from the outbreak on the Diamond Princess cruise ship, February 2020

Eurosurveillance
2020 | Journal article
Contributors: Russell, Timothy W; Hellewell, Joel; Jarvis, Christopher I; van Zandvoort, Kevin; Abbott, Sam; Ratnayake, Ruwan; Cmmid Covid-Working Group; Flasche, Stefan; Eggo, Rosalind M; Edmunds, W John et al.
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People-centred surveillance: a narrative review of community-based surveillance among crisis-affected populations

The Lancet. Planetary Health
2020 | Journal article
Contributors: Ratnayake, Ruwan; Tammaro, Meghan; Tiffany, Amanda; Kongelf, Anine; Polonsky, Jonathan A.; McClelland, Amanda
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Response strategies for COVID-19 epidemics in African settings: a mathematical modelling study

BMC Medicine
2020 | Journal article
Contributors: van Zandvoort, Kevin; Jarvis, Christopher I.; Pearson, Carl A. B.; Davies, Nicholas G.; Ratnayake, Ruwan; Russell, Timothy W.; Kucharski, Adam J.; Jit, Mark; Flasche, Stefan; Eggo, Rosalind M. et al.
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Simple ideas to mitigate the impacts of the COVID-19 epidemic on refugees with chronic diseases

Conflict and Health
2020 | Journal article
Contributors: Fawad, Muhammad; Rawashdeh, Fatima; Parmar, Parveen K; Ratnayake, Ruwan
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Event-based surveillance at health facility and community level in low-income and middle-income countries: a systematic review

BMJ Global Health
2019-12 | Journal article
Part of ISSN: 2059-7908
Source: Self-asserted source
Ruwan Ratnayake
grade
Preferred source (of 2)‎

The ethical contours of research in crisis settings: five practical considerations for academic institutional review boards and researchers

Disasters
2019-10 | Journal article
Part of ISSN: 0361-3666
Part of ISSN: 1467-7717
Source: Self-asserted source
Ruwan Ratnayake
grade
Preferred source (of 2)‎

Diabetes in humanitarian crises: the Boston Declaration

The Lancet Diabetes & Endocrinology
2019-08 | Journal article
Part of ISSN: 2213-8587
Source: Self-asserted source
Ruwan Ratnayake

The burden of diabetes and use of diabetes care in humanitarian crises in low-income and middle-income countries

The Lancet Diabetes & Endocrinology
2019-08 | Journal article
Part of ISSN: 2213-8587
Source: Self-asserted source
Ruwan Ratnayake
grade
Preferred source (of 2)‎

Responding to epidemics in large-scale humanitarian crises: a case study of the cholera response in Yemen, 2016–2018

BMJ Global Health
2019-07 | Journal article
Part of ISSN: 2059-7908
Source: Self-asserted source
Ruwan Ratnayake
grade
Preferred source (of 2)‎

Outbreak analytics: a developing data science for informing the response to emerging pathogens

Philosophical Transactions of the Royal Society B: Biological Sciences
2019-07-08 | Journal article
Part of ISSN: 0962-8436
Part of ISSN: 1471-2970
Source: Self-asserted source
Ruwan Ratnayake
grade
Preferred source (of 2)‎

Pilot testing and evaluation of a toolkit for menstrual hygiene management in emergencies in three refugee camps in Northwest Tanzania

Journal of International Humanitarian Action
2018 | Journal article
Source: Self-asserted source
Ruwan Ratnayake

Rebuilding people-centred maternal health services in post-Ebola Liberia through participatory action research

Global Public Health
2018-01 | Journal article
Part of ISSN: 1744-1692
Contributors: Theresa Jones; Lara Ho; Kelvin Koffa Kun; Penelope Milsom; John Shakpeh; Ruwan Ratnayake; Rene Loewenson
Source: Self-asserted source
Ruwan Ratnayake via Crossref Metadata Search
grade
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Understanding the menstrual hygiene management challenges facing displaced girls and women: findings from qualitative assessments in Myanmar and Lebanon

Conflict and Health
2017-10 | Journal article
Part of ISSN: 1752-1505
Contributors: Margaret L. Schmitt; David Clatworthy; Ruwan Ratnayake; Nicole Klaesener-Metzner; Elizabeth Roesch; Erin Wheeler; Marni Sommer
Source: Self-asserted source
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The Effects of an Integrated Community Case Management Strategy on the Appropriate Treatment of Children and Child Mortality in Kono District, Sierra Leone: A Program Evaluation

The American Journal of Tropical Medicine and Hygiene
2017-09-07 | Journal article
Part of ISSN: 0002-9637
Contributors: Ruwan Ratnayake; Jeffrey Ratto; Mary Choi; Laura Miller; Curtis Blanton; Colleen Hardy; Pheabean Momoh; John Kpaleyea; Yolanda Barbera
Source: Self-asserted source
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“We and the nurses are now working with one voice”: How community leaders and health committee members describe their role in Sierra Leone’s Ebola response

BMC Health Services Research
2017-07 | Journal article
Part of ISSN: 1472-6963
Contributors: Shannon A. McMahon; Lara S. Ho; Kerry Scott; Hannah Brown; Laura Miller; Ruwan Ratnayake; Rashid Ansumana
Source: Self-asserted source
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grade
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Sustaining community event-based surveillance in Sierra Leone

Online Journal of Public Health Informatics
2017-05-02 | Journal article
Part of ISSN: 1947-2579
Contributors: Eilidh M. Higgins; Erin Polich; Maitreyi Sahu; Stacey Mearns; Ruwan Ratnayake
Source: Self-asserted source
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How can the sustainable development goals improve the lives of people affected by conflict?

Bulletin of the World Health Organization
2017-02-01 | Journal article
Part of ISSN: 0042-9686
Contributors: Emmanuel d’Harcourt; Ruwan Ratnayake; Anna Kim
Source: Self-asserted source
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Improving Ebola infection prevention and control in primary healthcare facilities in Sierra Leone: a single-group pretest post-test, mixed-methods study

BMJ Global Health
2016 | Journal article
Part of ISSN: 2059-7908
Contributors: Ruwan Ratnayake; Lara S Ho; Rashid Ansumana; Hannah Brown; Matthias Borchert; Laura Miller; Thomas Kratz; Shannon A McMahon; Foday Sahr
Source: Self-asserted source
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Protecting public health in Yemen

The Lancet
2016 | Journal article
Part of ISSN: 0140-6736
Contributors: Tila Khan Ahmadzai; Zvidzai Maburutse; Laura Miller; Ruwan Ratnayake
Source: Self-asserted source
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Shigella flexneri with Ciprofloxacin Resistance and Reduced Azithromycin Susceptibility, Canada, 2015

Emerging Infectious Diseases
2016-11 | Journal article
Part of ISSN: 1080-6040
Contributors: Christiane Gaudreau; Pierre A. Pilon; Gilbert Cornut; Xavier Marchand-Senecal; Sadjia Bekal
Source: Self-asserted source
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Assessment of Community Event–Based Surveillance for Ebola Virus Disease, Sierra Leone, 2015

Emerging Infectious Diseases
2016-08 | Journal article
Part of ISSN: 1080-6040
Contributors: Ruwan Ratnayake; Samuel J. Crowe; Joseph Jasperse; Grayson Privette; Erin Stone; Laura Miller; Darren Hertz; Clementine Fu; Matthew J. Maenner; Amara Jambai et al.
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What is the scope for addressing menstrual hygiene management in complex humanitarian emergencies? A global review

Waterlines
2016-07 | Journal article
Part of ISSN: 0262-8104
Contributors: Marni Sommer; Margaret L. Schmitt; David Clatworthy; Gina Bramucci; Erin Wheeler; Ruwan Ratnayake
Source: Self-asserted source
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Acknowledgement of manuscript reviewers 2015

Conflict and Health
2016-02 | Journal article
Part of ISSN: 1752-1505
Contributors: Ruwan Ratnayake; Bayard Roberts; Michelle Gaffey; Adrianna Murphy
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A Plan for Community Event-Based Surveillance to Reduce Ebola Transmission - Sierra Leone, 2014-2015

Morbidity and Mortality Weekly Report
2015 | Journal article
Contributors: Crowe, Sam; Hertz, Darren; Maenner, Matt; Ratnayake, Ruwan; Baker, Pieter; Lash, R. Ryan; Klena, John; Lee-Kwan, Seung Hee; Williams, Candice; Jonnie, Gabriel T. et al.
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PRECIOUS ... LIFESAVING, BUT NOT WITHOUT PROBLEMS; A MIXED-METHODS STUDY EXAMINING BARRIERS AND FACILITATORS TO INFECTION PREVENTION AND CONTROL IN HEALTH FACILITIES DURING THE EBOLA VIRUS DISEASE EPIDEMIC IN SIERRA LEONE

The American Journal of Tropical Medicine and Hygiene
2015 | Journal article
Contributors: Ho, Lara; Ratnayake, Ruwan; Brown, Hannah; Ansumana, Rashid; Miller, Laura; Borchert, Matthias; Kratz, Thomas; Sahr, Foday; McMahon, Shannon A.
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Effects of a community scorecard on improving the local health system in Eastern Democratic Republic of Congo: qualitative evidence using the most significant change technique

Conflict and Health
2015-09-03 | Journal article
Part of ISSN: 1752-1505
Contributors: Lara S. Ho; Guillaume Labrecque; Isatou Batonon; Viviana Salsi; Ruwan Ratnayake
Source: Self-asserted source
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Acknowledgement of manuscript reviewers 2014

Conflict and Health
2015-02-06 | Journal article
Part of ISSN: 1752-1505
Contributors: Olivier Degomme; Ruwan Ratnayake; Bayard Roberts; Ines Keygnaert; Adrianna Murphy; An-Sofie Van Parys
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Acknowledgement of manuscript reviewers 2007–2013

Conflict and Health
2014 | Journal article
Part of ISSN: 1752-1505
Contributors: Olivier Degomme; Ruwan Ratnayake; Bayard Roberts
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Conflict and Health: seven years of advancing science in humanitarian crises

Conflict and Health
2014 | Journal article
Part of ISSN: 1752-1505
Contributors: Ruwan Ratnayake; Olivier Degomme; Bayard Roberts; Paul Spiegel
Source: Self-asserted source
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Measuring local determinants of acute malnutrition in Chad: a case-control study

The Lancet
2013-06 | Journal article
Part of ISSN: 0140-6736
Contributors: Casie Tesfai; Ruwan Ratnayake; Mark Myatt
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Challenges to the Surveillance of Meningococcal Disease in an Era of Declining Incidence in Montréal, Québec

Can J Public Health
2013-05 | Journal article
Part of ISSN: 1920-7476
Contributors: Ruwan Ratnayake; Robert Allard
Source: Self-asserted source
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grade
Preferred source (of 2)‎

Shifting dominance of Shigella species in men who have sex with men

Epidemiology and Infection
2012-04 | Journal article
Part of ISSN: 0950-2688
Contributors: R. RATNAYAKE; R. ALLARD; P. A. PILON
Source: Self-asserted source
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grade
Preferred source (of 2)‎

Ciprofloxacin-Resistant Shigella sonnei among Men Who Have Sex with Men, Canada, 2010

Emerging Infectious Diseases
2011 | Journal article
Contributors: Gaudreau, Christiane; Ratnayake, Ruwan; Pilon, Pierre A.; Gagnon, Simon; Roger, Michel; Levesque, Simon
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Peer review (105 reviews for 35 publications/grants)

Review activity for BMC health services research (2)
Review activity for BMC international health and human rights. (1)
Review activity for BMC public health (4)
Review activity for BMJ (2)
Review activity for BMJ global health. (4)
Review activity for BMJ open. (5)
Review activity for Canada communicable disease report. (1)
Review activity for Canadian journal of public health. (1)
Review activity for China CDC weekly. (1)
Review activity for Conflict and health. (36)
Review activity for Disasters. (1)
Review activity for Emerging infectious diseases. (1)
Review activity for Epidemiology and infection. (2)
Review activity for Euro surveillance. (1)
Review activity for Global security. (1)
Review activity for Health security. (1)
Review activity for Health services insights. (1)
Review activity for Journal of epidemiology and global health. (1)
Review activity for Journal of health & pollution. (1)
Review activity for Journal of migration and health. (2)
Review activity for PLoS currents. (2)
Review activity for PLOS global public health. (7)
Review activity for PLoS medicine. (1)
Review activity for PLoS neglected tropical diseases (3)
Review activity for PloS one. (2)
Review activity for Public health reports (1)
Review activity for Public health. (2)
Review activity for Scientific data. (2)
Review activity for The British journal of psychiatry (1)
Review activity for The Lancet regional health. (3)
Review activity for The Lancet. (2)
Review activity for The Lancet. (4)
Review activity for The Lancet. (1)
Review activity for The Lancet. (2)
Review activity for Vaccine (3)