<i>Wuchereria bancrofti</i> infection in Haitian immigrants and the risk of re-emergence of lymphatic filariasis in the Brazilian Amazon

Silva, Edson Fidelis da; Lacerda, Marcus Vinícius Guimarães de; Fontes, Gilberto; Mourão, Maria Paula Gomes; Martins, Marilaine

doi:10.1590/0037-8682-0407-2016

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Short Communication • Rev. Soc. Bras. Med. Trop. 50 (02) • Mar-Apr 2017 • https://doi.org/10.1590/0037-8682-0407-2016 copy

Wuchereria bancrofti infection in Haitian immigrants and the risk of re-emergence of lymphatic filariasis in the Brazilian Amazon

Authorship SCIMAGO INSTITUTIONS RANKINGS

Abstract

INTRODUCTION:

Lymphatic filariasis (LF) is a public health problem in Haiti. Thus, the emigration of Haitians to Brazil is worrisome because of the risk for LF re-emergence.

METHODS:

Blood samples of Haitian immigrants, aged ≥18 years, who emigrated to Manaus (Brazilian Amazon), were examined using thick blood smears, membrane blood filtration, and immunochromatography.

RESULTS:

Of the 244 immigrants evaluated, 1 (0.4%) tested positive for W. bancrofti; 11.5% reported as having received LF treatment in Haiti.

CONCLUSIONS:

The re-emergence of LF in Manaus is unlikely, due to its low prevalence and low density of microfilaremia among the assessed Haitian immigrants.

Keywords:
Lymphatic filariasis; Haitian immigrants; Brazilian Amazon

			Gender				Diagnosis methods
	Examined		female		male		TBS		PMF		ICT		Infected
Age group (years)	n	%	n	%	n	%	n	%	n	%	n	%	n	%	Parasite load mf/mL
18 - 22	15	6.1	4	1.6	11	4.5	15	6.1	15	6.1	7	2.9	0	0.0	0
23 - 27	42	17.2	11	4.5	31	12.7	42	17.2	42	17.2	12	4.9	0	0.0	0
28 - 32	70	28.7	22	9.0	48	19.7	70	28.7	70	28.7	15	6.1	1	0.4	9
33 - 37	43	17.6	10	4.1	33	13.5	43	17.6	43	17.6	14	5.7	0	0.0	0
38 - 42	40	16.4	6	2.5	34	13.9	40	16.4	40	16.4	14	5.7	0	0.0	0
43 - 47	17	7.0	5	2.0	12	4.9	17	7.0	17	7.0	6	2.5	0	0.0	0
48 - 52	13	5.3	5	2.0	8	3.3	13	5.3	13	5.3	7	2.9	0	0.0	0
53 - 57	2	0.8	0	0.0	2	0.8	2	0.8	2	0.8	2	0.8	0	0.0	0
> 58	2	0.8	0	0.0	2	0.8	2	0.8	2	0.8	1	0.4	0	0.0	0
Total	244	100.0	63	25.8	181	74.2	244	100.0	244	100.0	78	32.0	1	0.4	9

Gender			Mass treatment of participants in Haiti/yea
			2009		2010		2011		2012		2013		2014		Total
	n	%	n	%	n	%	n	%	n	%	n	%	n	%	n	%
Male	181	74.2	0	0.0	1	0.6	1	0.6	3	1.7	9	5.0	3	1.7	17	9.4
Female	63	25.8	2	3.2	1	1.6	1	1.6	3	4.8	3	4.8	1	1.6	11	17.5
Total	244	100.0	2	3.2	2	2.1	2	2.1	6	6.4	12	9.7	4	3.2	28	26.9

Sociedade Brasileira de Medicina Tropical - SBMT Caixa Postal 118, 38001-970 Uberaba MG Brazil, Tel.: +55 34 3318-5255 / +55 34 3318-5636/ +55 34 3318-5287, http://rsbmt.org.br/ - Uberaba - MG - Brazil
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[1] Corresponding author: Dra. Marilaine Martins e-mail:martins.marilaine@gmail.com