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Ruwan Ratnayake

MHS FETP

Research Degree Student
in infectious disease epidemiology and mathematical modeling

LSHTM
Keppel Street
London
WC1E 7HT
United Kingdom

I am an epidemiologist working on public health in humanitarian crises. I focus on the surveillance and control of cholera and epidemic diseases, policy guidance, spatial and mathematical modelling, and merging modern analytical methods with field epidemiology to solve problems. I also work on topics relating to noncommunicable diseases and community health in emergencies.

Before coming to the school, I was the lead epidemiologist for the International Rescue Committee (IRC), where I supported humanitarian programmes worldwide, as well as Co-Editor-in-Chief of the journal Conflict and Health. I trained as an FETP fellow with the Canadian Field Epidemiology Program of the Public Health Agency of Canada.

I am now pursuing a PhD supervised by Francesco Checchi and John Edmunds. With colleagues at Epicentre and Medecins Sans Frontieres, I aim to evaluate the effects of case-area targeted interventions for cholera outbreaks using mathematical modeling and observational studies. The work is generously supported by a Doctoral Foreign Study Award from the Canadian Institutes of Health Research.

For non-communicable diseases, I recently worked wth the IRC to develop and evaluate programs for noncommunicable disease management through primary and community health systems for Syrian refugees in Jordan and conflict-affected persons in the Democratic Republic of the Congo.

Affiliations

Faculty of Epidemiology and Population Health
Department of Infectious Disease Epidemiology

Centres

Centre for Global Chronic Conditions
Centre for the Mathematical Modelling of Infectious Diseases (CMMID)
Health in Humanitarian Crises Centre

Teaching

Conflict and Health

Research

Some recent work as PI/co-PI includes:

  • Effectiveness of case-area targeted intervention for cholera outbreaks in DRC
  • Evaluation of the cholera response in Yemen
  • Prevalence estimation of hypertension and diabetes in Syrian refugees in Jordan; development/evaluation of a community health worker model for NCD management during COVID-19 pandemic
  • Evaluation of hypertension and diabetes integration into emergency care in DRC
  • Development/evaluation of menstrual hygiene management guidelines in Tanzania, Myanmar, Lebanon
  • Rapid evaluation of infection prevention and control against Ebola in primary care facilities in Sierra Leone
  • Development/evaluation of community event-based surveillance for Ebola in Sierra Leone
  • Introduction and monitoring of oral cholera vaccine use against epidemics in West and Central Africa
  • Evaluation of integrated community case management for the appropriate treatment of children and child mortality in Sierra Leone and Ethiopia
  • Understanding determinants of acute malnutrition in Chad
  • Mortality estimation through household surveys in South Sudan, DRC, etc.
Research Area
Complex interventions
Conflict
Disease control
Evaluation
Mixed methods
Outbreaks
Spatial analysis
Modelling
Discipline
Epidemiology
GIS/Spatial analysis
Mathematical modelling
Disease and Health Conditions
Non-communicable diseases

Selected Publications

Heavy-tailed sexual contact networks and monkeypox epidemiology in the global outbreak, 2022.
Endo A; Murayama H; Abbott S; Ratnayake R; Pearson CAB; Edmunds WJ; Fearon E; Funk S
2022
Science (New York, N.Y.)
What we do know (and could know) about estimating population sizes of internally displaced people.
Ratnayake R; Abdelmagid N; Dooley C
2022
Journal of Migration and Health
Inference is bliss: Simulation for power estimation for an observational study of a cholera outbreak intervention.
Ratnayake R; Checchi F; Jarvis CI; Edmunds WJ; Finger F
2022
PLoS neglected tropical diseases
Effectiveness of case-area targeted interventions including vaccination on the control of epidemic cholera: protocol for a prospective observational study.
Ratnayake R; Peyraud N; Ciglenecki I; Gignoux E; Lightowler M; Azman AS; Gakima P; Ouamba JP; Sagara JA; Ndombe R
2022
BMJ Open
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.
Ratnayake R; Rawashdeh F; Hani MB; Zoubi S; Fawad M; Abualrub R; Al-Ali N; Goyal R; Al-Amire K; AlMaaitah R
2021
The Lancet Global Health
Early Experiences in the Integration of Non-communicable Diseases into Emergency Primary Health Care, Beni Region, Democratic Republic of the Congo.
Ratnayake R; Wittcoff A; Majaribu J; Nzweve J-P; Katembo L; Kasonia K; Nzanzu AK; Kiapi L; Ngoy P
2021
Annals of global health
Considerations for planning COVID-19 treatment services in humanitarian responses.
Garry S; Abdelmagid N; Baxter L; Roberts N; le Polain de Waroux O; Ismail S; Ratnayake R; Favas C; Lewis E; Checchi F
2020
Conflict and Health
Highly targeted spatiotemporal interventions against cholera epidemics, 2000-19: a scoping review.
Ratnayake R; Finger F; Azman AS; Lantagne D; Funk S; Edmunds WJ; Checchi F
2020
Lancet Infectious Diseases
Access to Care and Prevalence of Hypertension and Diabetes Among Syrian Refugees in Northern Jordan.
Ratnayake R; Rawashdeh F; AbuAlRub R; Al-Ali N; Fawad M; Bani Hani M; Goyal R; Greenough PG; Al-Amire K; AlMaaitah R
2020
JAMA Network Open
People-centred surveillance: a narrative review of community-based surveillance among crisis-affected populations.
Ratnayake R; Tammaro M; Tiffany A; Kongelf A; Polonsky JA; McClelland A
2020
Lancet Planetary Health
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.
Russell TW; Hellewell J; Jarvis CI; van Zandvoort K; Abbott S; Ratnayake R; CMMID COVID-19 working group; Flasche S; Eggo RM; Edmunds WJ
2020
Euro Surveill
Response strategies for COVID-19 epidemics in African settings: a mathematical modelling study.
van Zandvoort K; Jarvis CI; Pearson CAB; Davies NG; CMMID COVID-19 working group; Ratnayake R; Russell TW; Kucharski AJ; Jit M; Flasche S
2020
BMC Medicine
Responding to epidemics in large-scale humanitarian crises: a case study of the cholera response in Yemen, 2016-2018.
Spiegel P; Ratnayake R; Hellman N; Ververs M; Ngwa M; Wise PH; Lantagne D
2019
BMJ Global Health
How can the sustainable development goals improve the lives of people affected by conflict?
d'Harcourt E; Ratnayake R; Kim A
2017
BULLETIN OF THE WORLD HEALTH ORGANIZATION
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.
Ratnayake R; Ratto J; Hardy C; Blanton C; Miller L; Choi M; Kpaleyea J; Momoh P; Barbera Y
2017
AMERICAN JOURNAL OF TROPICAL MEDICINE AND HYGIENE
Assessment of Community Event-Based Surveillance for Ebola Virus Disease, Sierra Leone, 2015.
Ratnayake R; Crowe SJ; Jasperse J; Privette G; Stone E; Miller L; Hertz D; Fu C; Maenner MJ; Jambai A
2016
EMERGING INFECTIOUS DISEASES
Improving Ebola infection prevention and control in primary healthcare facilities in Sierra Leone: a single-group pretest post-test, mixed-methods study.
Ratnayake R; Ho LS; Ansumana R; Brown H; Borchert M; Miller L; Kratz T; McMahon SA; Sahr F
2016
BMJ GLOBAL HEALTH
Challenges to the surveillance of meningococcal disease in an era of declining incidence in montréal, Québec.
Ratnayake R; Allard R
2013
CANADIAN JOURNAL OF PUBLIC HEALTH-REVUE CANADIENNE DE SANTE PUBLIQUE
Shifting dominance of Shigella species in men who have sex with men.
Ratnayake R; Allard R; Pilon PA
2012
EPIDEMIOLOGY AND INFECTION
Ciprofloxacin-resistant Shigella sonnei among men who have sex with men, Canada, 2010.
Gaudreau C; Ratnayake R; Pilon PA; Gagnon S; Roger M; Lévesque S
2011
Emerging Infectious Diseases
Training in epidemiology and disease control for humanitarian emergencies.
Ratnayake R
2010
JOURNAL OF EPIDEMIOLOGY AND COMMUNITY HEALTH
Examining student perspectives on suicidal behaviour and its prevention in Sri Lanka.
Ratnayake R; Links P
2009
INTERNATIONAL JOURNAL OF SOCIAL PSYCHIATRY
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