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YELLOW FEVER: YELLOW FEVER: DRAFT CHECKLIST FOR NATIONAL & REGIONAL CONTINGENCY PLAN Jack Woodall, PhD Institute of Medical Biochemistry Federal University of Rio de Janeiro, Brazil (retd.) (Formerly WHO Geneva) ASIA
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DETECTION CONTROL FIVE KEY AREAS: 1.Public information 2.Diagnosis & Surveillance 3.Mosquito vector control 4.Vaccination 5.Hospitalisation/Health Care
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WHY PREPARE NOW? SHORTENS reaction time when YF emergency arises Allows IMMEDIATE implementation of prevention & control measures SAVES LIVES SAVES LIVES
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PUBLIC INFORMATION REMEMBER: Rumours dangerous, cause fear & confusion – NEVER try to cover up a YF outbreak – Provide information to mass media from start NEVER try to play situation down by saying – “This is only an outbreak, not an epidemic” – “It is already under control” INSTEAD say – “We are taking all necessary steps to protect you. Here is what you can do to help: 1)... 2)... 3)...”
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Actions to take NOW re info (1) Draft press release in all key languages, e.g.: Q. What is YF? A. Like dengue but worse Q. How is it transmitted? A. By mosquitos Q. How to prevent it? A. By mosquito control; – community MUST help Q. Is there a vaccine? A. Yes – will be provided FREE, first to priority sectors Q. What are priority sectors? A. These: 1.Health & essential services personnel & families 2.Etc. Prepare draft press release (in all key languages), e.g.: Q. What is YF? A. Fever like haemorrhagic dengue Q. How is it transmitted? A. By mosquitos Q. How to prevent it? A. By mosquito control; – community MUST help around their houses Q. Is there a vaccine? A. Yes -- will be provided first to priority sectors Q. Which are priority sectors? A. These: 1.Health & essential services personnel (to prevent them fleeing) 2.their families 3.etc.
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Actions to take NOW re Info (2) Design eye-catching LEAFLET giving above info – printer-ready Get a WEBSITE ready (hidden until needed) – with same Q&A -- plus DAILY UPDATE: No. cases, locations, press info Locations, dates & times of – Vaccination of priority groups – anti-mosquito spraying Plan emergency TELEPHONE lines (public info)
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DIAGNOSIS & SURVEILLANCE REMEMBER: Nobody is expecting to see a YF case – cases will be misdiagnosed as dengue, hepatitis or something else No lab test will be requested – in any case, probably not locally available YF may not be a reportable disease Therefore YF will NOT be suspected or reported
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Monkey Surveillance S. AMERICA: Monkey die-off VHF cases = YF AFRICA: Monkeys don’t die human outbreak that looks like smallpox = Monkeypox INDIA (Karnataka): Monkey die-off VHF cases = KFD (Kyasanur Forest Disease) (Surat): Ratfall human outbreak = Plague ASIA: Monkey die-off VHF cases = YF?
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Actions to take NOW re Diagnosis & Surveillance Make YF a reportable disease (IHR regs.) Prepare Case Definitions: Obtain travel hx from all VHF suspected cases – Africa or South America travel in last 2 weeks? Install rapid YF lab test in key locations – region-wide & nationwide – begin random testing of all haemorrhagic fever cases Begin active surveillance for dead monkeys Suspected, Probable, Confirmed
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MOSQUITO CONTROL REMEMBER: YF mosquito is same as dengue mosquito Therefore Good dengue control = Good YF control No evidence that Asian mosquitoes are less able to transmit YF Even poorly transmitting mosquitos can cause large urban epidemics – e.g. Nigeria 1987
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Actions to take NOW re Mosquitos Switch to DDT – temporarily until House Index <1.0 Identify dengue hot-spots for spray & larvicide Spray all health facilities & remove rubbish Spray all cemeteries and vacant lots Stockpile larvicide & adulticide Prepare paperwork for priority importation of spray equipment, insecticide & supplies Plan for loud-speaker vans to tell neighbourhoods, ahead of spraying, to leave windows open Improve rubbish collection
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EMERGENCY Action for Mosquitos Media – use all means to motivate community action Spraying, larviciding – mobilise police to help spray teams enter vacant premises Rubbish removal transport – Co-opt community organisations (Lions, Rotary) – Mobilise military
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VACCINATION (1) REMEMBER: Dengue, West Nile, JE immunity do NOT protect against YF YF vaccine – is one of the SAFEST – lasts at least 10 years (probably for life) BUT – needs 10 days to take effect – needs cold chain World YF vaccine stock = only 6 million doses
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VACCINATION (2) Ring VACCINATION is NO USE – because YF is transported by infected people much further than by mosquitos (Harrington LC et al. 2005 Am J Trop Med Hyg. 72(2):209-20.Harrington LCAm J Trop Med Hyg. [Ring SPRAYING is useful to protect neighbours of a case] Add YF vaccine to routine EPI programme (but will take years to protect whole population)
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Actions to take NOW re Vaccine (1) Identify risk groups Vaccinate priority groups 1.Health, public safety & essential services personnel (to prevent panic flight) 2.Their families 3.... Designate priority admin. & economic centres Designate public vaccination centres (schools, etc.) in advance Verify cold chain, prepare for crash expansion
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Actions to take NOW re Vaccine (2) Sources: identify for YF vaccine procurement Paperwork: prepare for vaccine procurement Adverse effects – establish case definition – establish reporting system – prepare explanations to allay public concern IN EMERGENCY, CONVERT ALL EPI VACCINATION CENTRES INTO YF VACCINATION CENTRES REBUILD REGIONAL YF VACCINE PRODUCTION
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HOSPITALS/HEALTH CENTRES WITH BEDS REMEMBER: YF NOT transmitted by contact – exception: blood transfusion No need for barrier nursing – use routine blood precautions ESSENTIAL – mosquito mesh in doors/windows – OR insecticide-treated bednets
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Actions to take NOW re Hospitals/ Health Centres Mosquito screen isolation ward(s) OR Stock supply of insecticide-treated bednets Intensify mosquito control around all health facilities – including rubbish removal Update contact info for all health facilities Arrange for military hospitals to take possible overflow from civil hospitals
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PLEASE DO NOT PUT THIS IN A FILE & LEAVE FOR A LESS BUSY TIME ANY DELAY IN IMPLEMENTATING YOUR NATIONAL PLAN COULD BE FATAL – including for YOU – & your family LITERALLY LITERALLY
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Thank You!
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