Volcanic activity controls cholera outbreaks in the East African Rift

Boloweti, Doudou Batumbo; Giraudoux, Patrick; Deniel, Catherine; Garnier, Emmanuel; Mauny, Frédéric; Kasereka, C. M.; Kizungu, Roger Vumilia; Muyembe, Jean Jacques; Bompangue, Didier; Bornette, Gudrun

doi:10.1371/journal.pntd.0008406

Cited by 12 publications

(11 citation statements)

References 66 publications

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“…Mayon in 2018 showed large vegetation and environmental impacts of this eruption, which have affected the whole archipelago up to the northern part of Borneo [ 72 ]. Studies have also stressed the likely impacts of volcanic activities on disease outbreaks [ 73 ].…”

Section: Discussionmentioning

confidence: 99%

Climate Anomalies and Spillover of Bat-Borne Viral Diseases in the Asia–Pacific Region and the Arabian Peninsula

Latinne

Morand

2022

Viruses

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Climate variability and anomalies are known drivers of the emergence and outbreaks of infectious diseases. In this study, we investigated the potential association between climate factors and anomalies, including El Niño Southern Oscillation (ENSO) and land surface temperature anomalies, as well as the emergence and spillover events of bat-borne viral diseases in humans and livestock in the Asia–Pacific region and the Arabian Peninsula. Our findings from time series analyses, logistic regression models, and structural equation modelling revealed that the spillover patterns of the Nipah virus in Bangladesh and the Hendra virus in Australia were differently impacted by climate variability and with different time lags. We also used event coincidence analysis to show that the emergence events of most bat-borne viral diseases in the Asia–Pacific region and the Arabian Peninsula were statistically associated with ENSO climate anomalies. Spillover patterns of the Nipah virus in Bangladesh and the Hendra virus in Australia were also significantly associated with these events, although the pattern and co-influence of other climate factors differed. Our results suggest that climate factors and anomalies may create opportunities for virus spillover from bats to livestock and humans. Ongoing climate change and the future intensification of El Niño events will therefore potentially increase the emergence and spillover of bat-borne viral diseases in the Asia–Pacific region and the Arabian Peninsula.

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Section: Discussionmentioning

confidence: 99%

Climate Anomalies and Spillover of Bat-Borne Viral Diseases in the Asia–Pacific Region and the Arabian Peninsula

Latinne

Morand

2022

Viruses

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“…Sweden and Finland experienced extremely warm summers that corresponded with high SST and an increase in human Vibrio infections in 2014 . Volcanic activity has even been associated with increased V. cholerae in freshwater lakes and with corresponding fluctuations in nearby cholera cases due to changes in water temperature and other chemical factors . Overall, climate change has the potential to expand the ecological niche of V. cholerae , and an increase in natural disasters can increase the risk of waterborne diseases .…”

Section: Environmental Risk Factorsmentioning

confidence: 99%

“…139 Volcanic activity has even been associated with increased V. cholerae in freshwater lakes and with corresponding fluctuations in nearby cholera cases due to changes in water temperature and other chemical factors. 140 Overall, climate change has the potential to expand the ecological niche of V. cholerae, and an increase in natural disasters can increase the risk of waterborne diseases. 141 Models of global climate change can help predict where V. cholerae outbreaks could become more common.…”

Section: ■ Environmental Risk Factorsmentioning

confidence: 99%

Update on Environmental and Host Factors Impacting the Risk of Vibrio cholerae Infection

et al. 2021

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Vibrio cholerae is the causative agent of cholera, a diarrheal disease that kills tens of thousands of people each year. Cholera is transmitted primarily by the ingestion of drinking water contaminated with fecal matter, and a safe water supply remains out of reach in many areas of the world. In this Review, we discuss host and environmental factors that impact the susceptibility to V. cholerae infection and the severity of disease.

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“…A separate study has also found that increased cholera case numbers, conflicts, and internally displaced persons in endemic areas in the east were associated with an increased risk of cholera diffusing outside of eastern provinces [ 39 ]. Regarding environmental conditions in eastern provinces, most of the lakes in eastern DRC are of tectonic origin, with physico-chemical properties conducive to the survival of Vibrio cholerae [ 40 ]. Thus, an aquatic environmental reservoir in the east with physico-chemical conditions that support toxigenic forms of Vibrio cholerae [ 41 ], combined with poor access to safe drinking water and proper sanitation facilities, may drive continuous exchange between humans and the environment [ 42 ].…”

Section: Discussionmentioning

confidence: 99%

Spatiotemporal dynamics of cholera hotspots in the Democratic Republic of the Congo from 1973 to 2022

Taty,

Bompangue,

Moore

et al. 2024

BMC Infect Dis

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Background Since the early 1970s, cholera outbreaks have been a major public health burden in the Democratic Republic of Congo (DRC). Cholera cases have been reported in a quasi-continuous manner in certain lakeside areas in the Great Lakes Region. As these cholera-endemic health zones constitute a starting point for outbreaks and diffusion towards other at-risk areas, they play a major role in cholera dynamics in the country. Monitoring the spatiotemporal dynamics of cholera hotspots and adjusting interventions accordingly thus reduces the disease burden in an efficient and cost-effective manner. Methods A literature review was conducted to describe the spatiotemporal dynamics of cholera in the DRC at the province level from 1973 to 1999. We then identified and classified cholera hotspots at the provincial and health zone levels from 2003 to 2022 and described the spatiotemporal evolution of hotspots. We also applied and compared three different classification methods to ensure that cholera hotspots are identified and classified according to the DRC context. Results According to all three methods, high-priority hotspots were concentrated in the eastern Great Lakes Region. Overall, hotspots largely remained unchanged over the course of the study period, although slight improvements were observed in some eastern hotspots, while other non-endemic areas in the west experienced an increase in cholera outbreaks. The Global Task Force on Cholera Control (GTFCC) and the Department of Ecology and Infectious Disease Control (DEIDC) methods largely yielded similar results for the high-risk hotspots. However, the medium-priority hotspots identified by the GTFCC method were further sub-classified by the DEIDC method, thereby providing a more detailed ranking for priority targeting. Conclusions Overall, the findings of this comprehensive study shed light on the dynamics of cholera hotspots in the DRC from 1973 to 2022. These results may serve as an evidence-based foundation for public health officials and policymakers to improve the implementation of the Multisectoral Cholera Elimination Plan, guiding targeted interventions and resource allocation to mitigate the impact of cholera in vulnerable communities.

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Volcanic activity controls cholera outbreaks in the East African Rift

Cited by 12 publications

References 66 publications

Climate Anomalies and Spillover of Bat-Borne Viral Diseases in the Asia–Pacific Region and the Arabian Peninsula

Climate Anomalies and Spillover of Bat-Borne Viral Diseases in the Asia–Pacific Region and the Arabian Peninsula

Update on Environmental and Host Factors Impacting the Risk of Vibrio cholerae Infection

Spatiotemporal dynamics of cholera hotspots in the Democratic Republic of the Congo from 1973 to 2022

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