Risk factors associated with yellow fever epidemic, Luanda, 2016
Luis Bandeira1,&, Joana Afonso1, Moises Francisco1, Joana Paixo1, Maria Soares1, Joao Pires1, Tazi Nimi Maria1
1Angola FETP, Luanda, Angola
Luis Bandeira, Angola FETP, Luanda, Angola
on 22 January 2016, the Minister of Health of Angola declared an outbreak of yellow fever in Luanda province; after 30 years without any confirmed cases. This study aimed to identify factors associated with the yellow fever infection in patients residing in Luanda province.
we conducted a 1:1 case-control study, with 120 cases and 120 controls. A case was defined as a person with positive laboratory confirmation for yellow fever. A control was a neighbor of case with negative laboratory test for yellow fever. A structured questionnaire was applied to those who gave informed consent to participate. Multivariate logistic regression models were used to identify associated factors with yellow fever infection. Significance level was set at p < 0.05 for all hypothesis tests.
63.3% of the cases and controls were male, 48.3% of the cases belonged to
the 11-20 age group, whereas only 47.5% of controls belonged to that age-group,
and 34.2% lived in Viana district. In 6.9% of cases co-infection with Malaria
was detected. Factors associated with yellow fever infection were: not being
vaccinated against yellow fever [OR = 24.9 (95% CI 9.8-62.8)]; presence of
water containers without cover at home [OR = 13.7 (95% CI 4.6-40.8)]; existence
gutters in the house [OR= 3.5 (95% CI 1.1-12.1)]; and having bottles around
the house [OR = 2.7 (95% CI 1.1-7.2)].
these results show the need for increasing public awareness about vector control communitarian strategies and personal protection from mosquito bites, as well as, the need to improve yellow fever vaccination coverage throughout the province of Luanda, mainly in the district of Viana, which was the most affected.
1st Ghana Field Epidemiology and Laboratory Training Programme Scientific conference (Accra)
Dates: 18 Sep 17 - 21 Sep 17
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Organizers: Ghana Field Epidemiology and Laboratory Training Programme
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