SPATIAL DISTRIBUTION OF LYMPHATIC FILARIASIS IN CROSS RIVER STATE, NIGERIA: A GEOGRAPHICAL INFORMATION SYSTEMS (GIS) STUDY
DOI:
https://doi.org/10.29121/granthaalayah.v4.i12.2016.2398Keywords:
Lympatic Filariasis, GIS, Spatial Distribution, Incidence, Wuchereria Bancrofti, Cross River StateAbstract [English]
Effective control efforts on Lymphatic filariasis (LF) are hindered by paucity of reliable data on spatial distribution of the disease. Aim: This study was aimed at mapping and describing the transmission pattern of lymphatic filariasis in order to identify high risk zones of infection in Cross River State (CRS), to guide intervention programmes. Method: An 8-year case record (2006-2013) of Lymphatic filariasis in the 18 local government areas (LGAs) of CRS was mapped using geographical information system, (GIS); employing the graduated colour map with natural break classification method. Thematic (LF incidence) maps generated in ArcView 3.1 were overlaid on vegetation and natural drainage maps of the state. Data on seasonal incidence were mapped through aggregation of attribute data (LF cases) by months. Data analysis was through thematic mapping and descriptive statistics. Results: Thematic maps displayed spatial variation in the distribution of LF in the state; showing Ogoja LGA with highest incidence (61.25%) of the 800 reported cases; Ikom, the lowest; 1(0.125%) and zero case in 7 LGAs. There were no visually remarkable patterns to suggest strong influence of vegetation and natural drainage on transmission. Greater proportion (82.12%) of cases was recorded in the dry season. Conclusion: The study has produced prevalence map of LF in the state, which could guide intervention programmes; and has also revealed paucity of data at the disposal of healthcare authorities, a situation that could hinder large scale intervention. Findings identify poor health-seeking behavior of the population and poor disease surveillance strategies in the state. Community health education, strengthening of public health apparatus and interventions through mass drug administration and integrated vector control, are recommended.
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References
Roberts L. S. and Janovy, J. ( 2005). Foundations of Parasitology. McGraw-Hill, New York; 702pp.
Wayangankar, S. (2015). Filariasis. Medscape. www.emedicine.medscape.com. Accessed 01/12/2016.
Antinori, S., Schifanella, L., Million, M., Galimberti, L., Ferraris, L. et al (2012). Imported Loa loa filariasis: three cases and a review of cases reported in non-endemic countries in the past 25 years. International Journal of Infectious Diseases, 16(9):e649-e662, doi: 10.1016/j.ijid.2012.05.1023. DOI: https://doi.org/10.1016/j.ijid.2012.05.1023
PIH (2015). Loa loa – Subcutaneous Filariasis. Parasites in Humans. www.parasitesinhumans.org. Accessed 01/12/2016.
WHO (2010). Progress report 2000-2009 and strategic plan 2010-2020 of the global programme to eliminate lymphatic filariasis: halfway towards eliminating lymphatic filariasis. World Health Organization. WHO/HTM/NTD/PCT/2010.6. Geneva.
WHO (2016a). Global Health Observatory (GHO) data; Lymphatic filariasis. World Health Organization. www.who.int. Accessed 01/12/2016.
WHO (2016b). Global programme to eliminate Lymphatic filariasis: Progress report, 2015. World Health Organization. www.who.int. Accessed 01/12/2016.
Okorie, P. N., Ademowo, G. O., Saka, Y., Davies, C. O., Bockarie, M. J., Molyneux, D. H. and Kelly-Hope, L. A. ( 2013). Lymphatic filariasis in Nigeria; Micro-stratification Overlap Mapping (MOM) as a Prerequisite for Cost-effective Resource Utilization in Control and Surveillance.plos Neglected Tropical Diseases,7(9): e2416. DOI: https://doi.org/10.1371/journal.pntd.0002416
Braide, E. I., Ikpeme, B., Edet, E., Atting, I. and Kale, O. O. (2003). Preliminary observations on the occurrence of Lymphatic filariasis in Cross River State, Nigeria. Nig. J. Parasitol. 24: 9-16.
Uttah, E.C., Simonsen, P. E., Pedersen, E. M, Udonsi, J. K. (2004). Bancroftian filariasis in the lower Imo River Basin, Nigeria. Afr. J. Appl. Zool. Environ. Biol. 6: 65-75.
Ajero, c. m. u., Nwoke, B. E. B., Okolie, N. J. C., Nwanjo, H. U, Oze, G. et al., (2007).Bancroftian filariasis in the Niger Delta area of eastern Nigeris. Res. J. Med. Sci. 1:113-117.
Targema, C. N., Onwuliri, C. O., Mafuya, H. B., Mwansat, G. S., Aida, A. et al (2008). Mapping of Lymphatic filariasis in Benue State, Nigeria. Nig. J. Parasitology, 29:55-60.
Agi, P. I. and Ebenezer, A. (2009). Observations on Filaria Infection in Amassoma Community in the Niger Delta. Niger. I. Appl. Sci. Environ. Man. 1:15-19.
Ojurongbe, o.,Akinbo, J. A., Ogiogwa, I. J., Bolaji, O. S and Adeyeba, O. A. Lymphatic filariasis in a rural community in Nigeria: A challenge ahead. Afr. J. Med. Sci. 39: 179-83.
Okon, O. E., Ibor, C. I and Opara, K. N. (2010). Bancroftian filariasis among the Mbembe people of Cross River State, Nigeria. J. Vector Borne Diseases, 47(2):91-6.
Uttah, E. C. (2011). Prevalence of endemic Bancroftian filariasis in the high altitude region of south-eastern Nigeria. Journal of Vector Borne Diseases, 48:78-84.
Ekanem, I. A., Alaribe, A. A. A. and Ekanem, A. P. (2011). Prevalence of Bancroftian filariasis among Edim Otop sub-urban dwellers in Calabar Municipality of Cross River state, Nigeria. J. Appl Pharm Sci. 1:63-67.
Manguin, S., Bangs, M.J., Pothikasikorn, J., Chareonviriyaphap, T (2009). Review on global co-transmission of human Plasmodium species and Wuchereria bancrofti by Anopheles mosquitoes. Infect. Genet. Evol. 10:157-177.
WHO (2011). Position Statement on mapping morbidity and preventing disability in GPELF. World Health Organization,WHO/HTM/NTD/PCT/2011.8.Geneva.
Hotez, P. J., Asojo, O. A. and Adesina, A. M. (2012). Nigeria: “ground Zero” for the High Prevalence Neglected Tropical Diseases. PLos Negl. Trop. Dis. 6:e1600.doi:10.1371/journal.pntd.0001600. DOI: https://doi.org/10.1371/journal.pntd.0001600
Ukpong,I. G., Etim, S. E., Ogban, E. I and Abua L. L. (2015). Prevalence of Malaria in the Highlands of Obudu Cattle Ranch, Nigeria. International Journal of Tropical Disease and health, 7(3): 87-93.
Ekpenyong, R and Ukpong I.G. (2003). Mapping the distribution of malaria incidence in Akwa Ibom State using G.I.S. Cartography, GIS and Sustainable Environmental Management. Nigeria Catography Association, University of Lagos, Lagos 79-93.
Iboh, C. I., Okon, O. E., Opara, K. N., Asor, J. E. and Etim, S. E.(2012). Lymphatic filariasis among the Yakuur people of Cross River State, Nigeria. Parasite & Vectors. 5:203. Doi:10.1186/1756-3305-5-203. DOI: https://doi.org/10.1186/1756-3305-5-203
Githeko, A., K., Lindsay, S. W., Confaloneri, U. E. and Patz, J. A. (2000). Climate Change and Vector-borne Diseases: A regional Analysis. Bull. World Health Organization.
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