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1
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- All of the yellow countries have at least some areas with endemic
malaria transmission.
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2
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- Parasitic infection of human red blood cells
- 4 species can infect humans
- Plasmodium falciparum
- Plasmodium vivax
- Plasmodium malariae
- Plasmodium ovale
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3
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- Most dangerous form of malaria
- Risk of cerebral malaria, renal failure, acute respiratory distress
syndrome, severe anemia
- Prompt treatment is essential
- Untreated infection in a non-immune person would likely be fatal
- Once person is treated and cured, there is no risk of relapse (but you
can get infected again…)
- P. falciparum has no dormant liver stage (hypnozoite)
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4
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- Less likely to be life threatening than P. falciparum
- Symptoms (especially fever) can still be dramatic
- Different drugs are used to treat blood and liver stage parasites
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5
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- Fever is by far the most common symptom, but is by no means the only one
- Often can have constellation of symptoms described as “flu-like”
- Other symptoms can include: chills, fatigue, weakness, headache, nausea,
vomiting, diarrhea, muscle aches, mental status changes
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6
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- Spread by bite of infected female Anopheles mosquitoes
- Night-biting mosquitoes
- Indoor-biting mosquitoes
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7
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8
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- 2 main ways it kills:
- Anemia
- Parasites destroy red blood cells
- Associated with increased
mortality
- Cerebral malaria
- Damages brain and other vital organs
- Fatality rate of 15% or more
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9
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- 1 million deaths per year
- Most deaths in African children
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10
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- Every one of these deaths is preventable!!!
- No stigma associated with malaria
- No morality debates
- No “Save the Mosquito” groups
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11
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- Founded by:
- World Health Organization
(WHO),
- United Nations Development
Program (UNDP),
- United Nations Children's Fund
(UNICEF)
- and World Bank
- Includes national governments, civil society and non-governmental
organizations, etc.
- Provides framework for coordination between Ministries of Health and
various organizations
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12
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- The goal of Roll Back Malaria, established as a health initiative by WHO
and its partners in 1998, is to halve the world's malaria burden by
2010.
- At the Africa Summit on RBM, April 2000, Heads of State or senior
representatives from 44 malaria-afflicted countries in Africa agreed to
a series of interim goals to be attained by 2005.
- Global program with clear strategies
- Provides framework for Action
- Touts prevention and treatment
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13
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- At least 60% of those with malaria should be able to access and use
correct, affordable and appropriate treatment within 24 hours.
- At least 60% of those at risk of malaria, particularly children under
five years of age and pregnant women should use insecticide treated
mosquito nets.
- At least 60% of pregnant women at risk of malaria should have access to
chemoprophylaxis or intermittent presumptive treatment.
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14
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15
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- Intermittent Preventive Treatment (IPT)
- Insecticide-Treated Bednets (ITNs)
- Case Management (Treatment)
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16
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17
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- Malaria during pregnancy in sub-Saharan Africa is estimated to account
for:
- 400,000 cases severe anemia in pregnant women
- ~ 35% preventable low birth weight
- ~ 5% infant mortality
- (est. 75,000 - 200,000 infant
deaths annually)
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18
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- Drugs
- Intermittent preventive treatment (IPT)
- Chemoprophylaxis (no longer recommended)
- Insecticide Treated Nets (ITNs)
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19
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- Most regimens require weekly or more frequent dosing
- Chloroquine most commonly used drug
- Usefulness severely limited by:
- Difficulty in delivering intervention
- Poor adherence to regimen
- Side effects of chloroquine (especially itching)
- Rising levels of P. falciparum resistance to chloroquine
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20
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- Most commonly adopted regimen:
two treatment doses of sulfadoxine-pyrimethamine (SP) (3
tablets/treatment): one second trimester, one third trimester
- Very inexpensive (< 20 cents per treatment)
- Therapy easily delivered and may be directly observed (avoids issues of
adherence to regimen)
- Generally well-tolerated with few side effects
- Trials demonstrating efficacy have been conducted in Malawi, Kenya (2
studies), and Mali (not yet published)
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21
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- World Health Organization
recommends that in areas with high malaria transmission:
- Currently, the best available drug for IPT is sulfadoxine-pyrimethamine
(SP or Fansidar)
- Women receive at least 2 doses of IPT after quickening (i.e.after the
first trimester)
- Doses should be at least one month apart
- More than 2 doses is likely beneficial and not harmful
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22
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- Mosquito nets or bednets have been used for a long time for personal
protection
- High household coverage of insecticide treated nets also reduces vector
populations (‘community effect’)
- Personal and community level effects work best at high coverage.
- ITN use will reduce all-cause infant mortality by more than 20%
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23
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- Coverage counts!!!!
- Insecticide is extremely important
- Different shapes and sizes – rectangular, conical
- Different Materials – cotton, nylon, polyester, polyethylene
- Different Types – conventional, long lasting/long duration
- Different Pyrethroid Insecticides - Permethrin (Peripel), Deltamethrin
(KO Tabs), Alphacypermethrin (Fendona)
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24
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25
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- Central Church of Africa, Presbyterian (CCAP)
- Presbyterian Church USA (PC USA) and the Reformed Church in America
(RCA) collaborating with CCAP
- Christian Women’s NetWorkers Program (CWNP) activities in 2 Synods
- Synod of Livingstonia
- 1.2 million people
- Malaria is leading cause of morbidity and mortality
- Infant Mortality Rate = 17.7% (1992 national estimate)
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26
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- Facilitating health programs since 1894
- Major partner in Christian Hospital Association of Malawi (CHAM)
- Began malaria prevention education and ITN activities in 1996
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27
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- 3-year collaboration
- Technical assistance
- meetings in Blantyre and Kampala
- survey development
- strengthening linkage between CCAP and National Program
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28
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- 50% pregnant women under ITNs
- 50% children <5 sleeping under ITNs
- 60% pregnant women receive 2 doses of IPT
- 50% ITN retreatment within 12 months
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29
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- Select specific start-up congregations based on location, year-round
risk of malaria
- Selection of women within congregation (all CCAP) because women
historically have been more active in church
- (con’t . .)
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30
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- Selected women:
- Have history with and are trusted by congregation
- Read and write local language
- Trained for a week in selling, dipping, recordkeeping, and adult
education
- House-to-house sales and redipping
- ANC and <5 clinics
(con’t . .)
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31
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- Census through village leadership
- Nets procured through PSI and US-based congregations
- Follow Malawi government training protocol
- Sell nets at government set rate
- Focus on pregnant women and young children (natural fit)
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32
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- High levels of ITN retreatment – 46%
- Increasing coverage
- Pregnant women sleeping under ITN – 34%
- Children <5 sleeping under ITN – 53%
- IPT – ~80% receiving at least two doses
- Increased community awareness
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33
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- IPT is simple and effective
- ITNs are simple and effective
- Both require working closely with people
- The result is saving lives of children!!!
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34
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