Journal of Advances in Environmental Health Research

Journal of Advances in Environmental Health Research

Assessing the Impacts of Climate Change on Human Health: A Study of the Climate-Health Nexus in Nampula City, Mozambique

Document Type : Original Article

Authors
1 Rovuma University-Faculty of Geosciences- Av. Josina Machel-256- Nampula, Mozambique
2 Independent Researcher, Tsukuba-Matsuchiro-3-24-1, Japan
3 University of Tsukuba- Institute of Systems and Information Engineering, 305-8577, 1-1-1 Tennoudai, Tsukuba, Japan
10.34172/jaehr.1343
Abstract
Background: Variations in temperature and precipitation can cause an increase in vector-borne and water-borne diseases. Situated in a vulnerable geographic area, Mozambique is particularly susceptible to such climate-related incidents, leading to floods and the spread of diseases. In this study, we investigated the changes in temperature and precipitation patterns and their impact on the occurrence of vector-borne and water-borne diseases in Nampula, Mozambique.
Methods: We used both intra-annual and inter-annual analysis techniques to identify monthly and yearly trends. Linear regression and ANOVA models were applied to assess the relationship between temperature, precipitation, and the selected vector and water-borne diseases (malaria, diarrhea, and dysentery).
Results: The analysis of temperature and precipitation data from 2000 to 2019 revealed an overall positive trend and delayed onset and earlier end of the rainy season, implying changes in the timing and duration of rainfall. The analysis of temperature data over the last 10 years revealed an increase in mean minimum temperature. These findings suggest a changing climate pattern characterized by consistent warming trends. Statistically significant results were obtained for the mean minimum temperature from 2010 to 2019 and the mean precipitation from 2000 to 2009 in relation to diarrhea and dysentery, respectively (P < 0.05; r = 0.70 and 0.64).
Conclusion: This study demonstrates a positive correlation between climate variables and malaria, diarrhea, and dysentery.
Keywords

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  1. McMichael AJ, Campbell-Lendrum DH, Corvalán CF, Ebi KL, Githeko AK, Scheraga JD, et al. Climate Change and Human Health: Risks and Responses. Geneva: World Health Organization; 2003. p. 1-17.
  2. IPCC (Intergovernmental Panel on Climate Change), Albritton DL, Dokken DJ. et al. Climate Change 2001: Synthesis Report, Summary for Policymakers. Vol 397. Watson RT, ed. Cambridge, UK: Cambridge University Press; 2001.
  3. World Health Organization (WHO). Climate Change and Health. Fact Sheet Details. 2018. Available from: https://www.who.int/news-room/fact-sheets/detail/climate-change-and-health. Updated October 30, 2021.
  4. Wu X, Lu Y, Zhou S, Chen L, Xu B. Impact of climate change on human infectious diseases: empirical evidence and human adaptation. Environ Int. 2016;86:14-23. doi: 1016/j.envint.2015.09.007.
  5. von Schirnding Y. Health and sustainable development: can we rise to the challenge? Lancet. 2002;360(9333):632-7. doi: 1016/s0140-6736(02)09777-5.
  6. Epstein PR. Climate change and emerging infectious diseases. Microbes Infect. 2001;3(9):747-54. doi: 1016/s1286-4579(01)01429-0.
  7. Patz JA, Campbell-Lendrum D, Holloway T, Foley JA. Impact of regional climate change on human health. Nature. 2005;438(7066):310-7. doi: 1038/nature04188.
  8. Luber G, McGeehin M. Climate change and extreme heat events. Am J Prev Med. 2008;35(5):429-35. doi: 1016/j.amepre.2008.08.021.
  9. Hii YL, Rocklöv J, Ng N. Short term effects of weather on hand, foot and mouth disease. PLoS One. 2011;6(2):e16796. doi: 1371/journal.pone.0016796.
  10. Bowen KJ, Ebi KL. Governing the health risks of climate change: towards multi-sector responses. Curr Opin Environ Sustain. 2015;12:80-5. doi: 1016/j.cosust.2014.12.001.
  11. Woodward A, Smith KR, Campbell-Lendrum D, Chadee DD, Honda Y, Liu Q, et al. Climate change and health: on the latest IPCC report. Lancet. 2014;383(9924):1185-9. doi: 1016/s0140-6736(14)60576-6.
  12. Maibach EW, Nisbet M, Baldwin P, Akerlof K, Diao G. Reframing climate change as a public health issue: an exploratory study of public reactions. BMC Public Health. 2010;10:299. doi: 1186/1471-2458-10-299.
  13. Cyclone Idai and Kenneth. Available from: https://www.unicef.org/mozambique/en/cyclone-idai-and-kenneth.
  14. OCHA, UN RC/HC Mozambique. UN Humanitarian Coordinator in Mozambique, Myrta Kaulard - Press Release on the Humanitarian Impact of Cholera and Tropical Cyclone Freddy. Available from: https://reliefweb.int/report/mozambique/un-humanitarian-coordinator-mozambique-myrta-kaulard-press-release-humanitarian-impact-cholera-and-tropical-cyclone-freddy. Published March 16, 2023. Posted March 16, 2023.
  15. Teklehaimanot HD, Lipsitch M, Teklehaimanot A, Schwartz J. Weather-based prediction of Plasmodium falciparum malaria in epidemic-prone regions of Ethiopia I. Patterns of lagged weather effects reflect biological mechanisms. Malar J. 2004;3:41. doi: 1186/1475-2875-3-41.
  16. Colher CM. Analysis of temperature and precipitation variability and its correlation in the occurrence of malaria in Quelimane, Mozambique. Geografia (Londrina). 2020;29(1):65-84. doi: 5433/2447-1747.2020v29n1p65.
  17. Horn LM, Hajat A, Sheppard L, Quinn C, Colborn J, Zermoglio MF, et al. Association between precipitation and diarrheal disease in Mozambique. Int J Environ Res Public Health. 2018;15(4):709. doi: 3390/ijerph15040709.
  18. Chen WH, Azman AS. Mitigating cholera in the aftermath of cyclone Idai. Am J Trop Med Hyg. 2019;101(5):960-2. doi: 4269/ajtmh.19-0285.
  19. Instituto Nacional de Estadística (INE). IV General Registration of Population and Housing 2017 Definitive Results. Maputo, Mozambique: INE; 2019. [Portuguese]. Available from: http://www.gov.ine.mz.
  20. National Institute of Meteorology [INAM - Instituto Nacional de Meteorologia] website. https://www.inam.gov.mz/index.php/pt/
  21. Mozambican Ministry of Health-District Directorate of Nampula City. Available from: https://www.misau.gov.mz/.
  22. Zermoglio F, Steynor A, Jack C, Pinto I, Ebi K, Allen L, et al. Climate Change and Health in Mozambique: Impacts on Diarrheal Disease and Malaria. United States Agency for International Development; 2018.
  23. Gasparrini A, Armstrong B. Time series analysis on the health effects of temperature: advancements and limitations. Environ Res. 2010;110(6):633-8. doi: 1016/j.envres.2010.06.005.
  24. Chao YS, Wu CJ, Wu HC, Chen WC. Trend analysis for national surveys: application to all variables from the Canadian Health Measures Survey cycle 1 to 4. PLoS One. 2018;13(8):e0200127. doi: 1371/journal.pone.0200127.
  25. Schober P, Boer C, Schwarte LA. Correlation coefficients: appropriate use and interpretation. Anesth Analg. 2018;126(5):1763-8. doi: 1213/ane.0000000000002864.
  26. Fraser DAS. The P-value function and statistical inference. Am Stat. 2019;73(Suppl 1):135-47. doi: 1080/00031305.2018.1556735.
  27. Uamusse MM, Aljaradin M, Nilsson E, Persson KM. Climate change observations into hydropower in Mozambique. Energy Procedia. 2017;138:592-7. doi: 1016/j.egypro.2017.10.165.
  28. Bandyopadhyay S, Kanji S, Wang L. The impact of rainfall and temperature variation on diarrheal prevalence in sub-Saharan Africa. Appl Geogr. 2012;33:63-72. doi: 1016/j.apgeog.2011.07.017.
  29. Alexander KA, Blackburn JK. Overcoming barriers in evaluating outbreaks of diarrheal disease in resource poor settings: assessment of recurrent outbreaks in Chobe district, Botswana. BMC Public Health. 2013;13:775. doi: 1186/1471-2458-13-775.
  30. Tornheim JA, Manya AS, Oyando N, Kabaka S, O’Reilly CE, Breiman RF, et al. The epidemiology of hospitalization with diarrhea in rural Kenya: the utility of existing health facility data in developing countries. Int J Infect Dis. 2010;14(6):e499-505. doi: 1016/j.ijid.2009.07.021.