WHOWHO CollaboratingCollaborating CentreCentre forfor ArbovirusArbovirus andand HemorrhagicHemorrhagic FeverFever ReferenceReference andand ResearchResearch Meeting of Collaborating Centres and Dengue National Reference laboratories for the Americas, June 10-12, 2008, Panama
Harvey Artsob, PhD Director, Zoonotic Diseases and Special Pathogens Program National Microbiology Laboratory, Public Health Agency of Canada, WHO Collaborating Centre for Arboviruses and Hemorrhagic Fever Reference and Research 1995-2008
1. Virology Laboratory – Ottawa, Ontario 1995-98
Arbovirus diagnostic/reference services, field studies, molecular diagnostics
2. Canadian Science Centre for Human and Animal Health – Winnipeg, Manitoba 1998-2008 Major program expansion, level 3 and 4 laboratories, clean and high containment insectories. Development of viral hemorrhagic fever and emergency response programs. Involvement in international outbreak responses. WHO Collaborating Centre - Redesignation Pending The WHO Collaborating Centre is currently being redesignated as a WHO Collaborating Centre for Emerging and Zoonotic Diseases Detection, Diagnosis, Reference and Research.
Institute Director – Dr Frank Plummer
Head of Collaborating Centre – Dr Harvey Artsob
The Collaborating Centre is housed within the Division of Zoonotic Diseases and Special Pathogens which currently has 31 indeterminate staff including 9 professionals. In addition there are 7 casuals, 5 post docs, 12 students and 2 visiting scientists (June 1, 2008). Collaborating Centre Head Harvey Artsob Mike Drebot Ute Stroeher Professional staff : WHO Collaborating Centre for Heinz Feldmann Emerging Zoonotic Diseases: Detection, Diagnosis, Reference and Research (June, 2008) Institute Director Frank Plummer Steven Jones
Jim Strong Heidi Wood Gary Kobinger Robbin Lindsay NationalNational MicrobiologyMicrobiology LaboratoryLaboratory - Opened in June, 1998 - Initially part of Health Canada but currently is within the Public Health Agency of Canada NationalNational MicrobiologyMicrobiology LaboratoryLaboratory
Housed within the Canadian Science Centre for Human and Animal Health. One Facility, Two Labs: The Public Health Agency of Canada’s National Microbiology Laboratory (NML) The Canadian Food Inspection Agency’s National Centre for Foreign Animal Disease (NCFAD) WHO Collaborating Centre Biodefense Biodefense
Training --- Research --- Diagnostic --- Field studies ---
Program Mandates ------Public Health Public Health
--- Outbreak investigation --- 1996-1997
Initial field endeavour - setting the stage for international activities OutbreakOutbreak InvestigationInvestigation -- gaininggaining experienceexperience && internationalinternational reputationreputation --
SARS, China Ebola, Congo
Nipah, Bangladesh CCHF, Iran OutbreakOutbreak InvestigationInvestigation -- gaininggaining experienceexperience && internationalinternational reputationreputation --
SARS, China Ebola, Congo
•• Expertise:Expertise: diagnosticdiagnostic fieldfield supportsupport usingusing mobile lab unit mobile lab unit •• Experience:Experience: -- EEbolabola HF,HF, Mbomo,Mbomo, DRCDRC -- NNipahipah encephalitis,encephalitis, Faridpur,Faridpur, BangladeshBangladesh -- CCrimean-Congorimean-Congo HF,HF, Zahedan,Zahedan, IranIran -- SSARS,ARS, HongHong KongKong && Guangzhou,Guangzhou, ChinaChina -- MMarburg arburg HF,HF, Uige,Uige, AngolaAngola -- RRiftift ValleyValley Fever,Fever, KenyaKenya -- EEbolabola HF,HF, Luebo,Luebo, DRCDRC Nipah, Bangladesh CCHF, Iran MobileMobile lablab responseresponse ––deployeddeployed toto internationalinternational outbreaksoutbreaks Bilateral collaborations – Paraguay
Collaborations were undertaken to study the dynamics of hantavirus transmission by rodents in the Chaco region of Paraguay (2003) Project status - completed Bilateral consultation and capacity building at PAHO’s request
Bolivian hemorrhagic fever activities, Bolivia, October, 2004 Capacity building/collaborations – Canada & Bolivia
Visit to CENETROP laboratory Visit to the National Microbiology in Santa Cruz (Oct, 2004) Laboratory, Winnipeg (Nov, 2005) Collaborations have been initiated with Bolivian colleagues concerning training and diagnostics for arenaviruses including improved front line diagnostics for Bolivian hemorrhagic fever. Project status - ongoing Bilateral collaborations – Cuba (1)
Collaborative studies have resulted in the first demonstration of West Nile Virus activity in Cuba based on serological studies of horses and the demonstration of human symptomatic infections due to West Nile virus. Bilateral collaborations – Cuba (2)
West Nile virus field (mosquito & bird) studies (March, 2008) Project status - ongoing Bilateral collaborations – Argentina
Development of a VSV pseudotype platform that incorporates hantaviral genes to allow for improved hantavirus typing. Project status – initial stages of development Arboviruses : locally contracted and travel - associated Mosquito transmitted arboviruses isolated in Canada
Virus Antigenic group Disease in humans/animals Eastern equine encephalitis alphavirus + humans, + animals Western equine encephalitis Alphavirus + humans, + animals St Louis encephalitis flavivirus + humans, - animals West Nile flavivirus + humans, + animals California encephalitis California + humans, - animals Snowshoe hare California + humans, + animals Jamestown Canyon California + humans, - animals Trivittatus California - humans, - animals Cache Valley Bunyamwera + humans, + animals Northway Bunyamwera - humans, - animals Turlock Turlock - humans, - animals Flanders Rhabdovirus - humans, -animals Mosquito-transmitted arboviruses of medical importance isolated in Canada
CAL = snowshoe hare (SSH) &/or Jamestown Canyon (JC) viruses
CAL CAL CAL CAL CAL CAL CAL CAL CAL EEE CAL SLE SLE WN WN WN WN EEE WN WN SLE WEE WEE WEE WEE WEE SLE
Aedes/Ochlerotatus Culex spp Culiseta melanura Yearly WNV Case Numbers
2500 2353
2000
1500 1481
Human Cases 1000
US- 3510
500 >400
224 25 151
2001 2002 2003 2004 2005 2006 2007 Simplified WNV Testing Algorithm Acute Sample (Suspect Cases)
IgM ELISA + (IgG ELISA, Avidity Testing if IgG Positive)
10k 1k 100 10 1 1 0.1 0.1
400 bp Convalescent Sample Rn Rn 10,000 1000 100 10 1 0.1
10k 1k 100 10 1 0.1
Cycle Confirmatory Serology* PCR (Tilley etCt al) (Eg. Plaque Reduction Neutralization Test-PRNT) (Demonstration of Seroconversion, HI, IgG ELISA)
*Confirmation of first 5 cases in jurisdiction or province Additional probables will not require PRNTs to be designated cases Tick transmitted arboviruses isolated in Canada
Virus Antigenic group Disease in humans/animals Powassan flavivirus + humans, - animals Colorado tick fever Colorado tick fever + humans, - animals Silverwater Kaisodi - humans, - animals Bauline Kemerovo - humans, - animals Great Island Kemerovo -Humans, -animals Avalon Sakhalin ? humans, - animals Tick-transmitted arboviruses of medical importance isolated in Canada
POW POW CTF CTF POW Human arbovirus infections with histories of recent travel outside Canada
Diagnostic testing algorithm:
1. Hemagglutination inhibition serology is routinely undertaken using alphavirus (eastern equine encephalitis, western equine encephalitis, Chikungunya, Sindbis) and flavivirus (dengue, St Louis encephalitis, Powassan) antigens 2. IgM and IgG ELISA’s and neutralization tests are undertaken for dengue virus on selected serum samples 3. Referral testing is undertaken at CDC Fort Collins for selected arbovirus infections such as Venezuelan equine encephalitis and Mayaro. Human arboviral disease documented in Canadians with histories of travel
The majority of arbovirus infections documented are flavivirus infections, likely due to dengue virus
CONF IMPORTED CANADIAN FLAVIVIRUS INFECTIONS, SUSP 120 PRIMARILY DENGUE - 1974-2003
100
80
60 CASES 40
20
0 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 YEAR Dengue in the Americas, 1980-1999
CONF IMPORTED CANADIAN FLAVIVIRUS INFECTIONS, SUSP 120 PRIMARILY DENGUE - 1974-2003
100
80
60 CASES 40
20
0 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 YEAR Dengue activities - World Health Organization
Geneva, 2005 Bangkok, 2006
- 6 month secondment to WHO by Dr Artsob to set up lab network. - Participation in WHO/PDVI sponsored study to evaluate commercial diagnostic kits. - Hosted diagnostics network meeting in Winnipeg. - Participation in preparation of Ho Chi Minh City, 2007 dengue diagnostics guide for Nature Reviews. Non dengue human arboviral disease documented in Canadians with histories of travel
Virus Travel history Ross River Australia, Fiji Chikungunya/O’Nyong-Nyong Uganda Eastern equine encephalitis United States (New Jersey) Western equine encephalitis United States (Oregon) Tick-borne encephalitis Austria Japanese encephalitis Manchuria Powassan New York state St Louis encephalitis Ohio West Nile United States ( Louisiana, Colorado, etc) Colorado tick fever Colorado Rift Valley fever Kenya Importation of Chikungunya Virus from Indian Ocean: Canadian Cases During Ongoing Outbreak 2005-2007
Total Chikungunya Exposures / Cases* = 35 Canadians (7 provinces) 2005-1 case (Quebec) 2006-20 cases (BC-1, AB-1, SK-1, MB-2, Ontario-11, PQ-4) 2007-12 cases (AB-2, MB-2, Ontario-6, PQ-3, NS-1) Travel History Included: Reunion Island, Mauritius, India, Madagascar, Sri Lanka, Cote d’Ivoire Clinical symptoms/disease : fever, myalgia, arthralgia & rash