Prioritizing Water Security in the Management of Vector‐Borne Diseases: Lessons From Oaxaca, Mexico

Akanda, A. S.; Johnson, Kelly; Ginsberg, Howard S.; Couret, Jannelle

doi:10.1029/2019gh000201

Cited by 12 publications

(12 citation statements)

References 22 publications

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“…albopictus are plausible hypotheses (Kles et al, 1994). Additional suppositions include local water use, specifically water insecurity, water hoarding, and unidentified standing water, along with other socioeconomic conditions that may have stimulated the growth of local vector populations and hampered the preventative efforts taken by the local government (Akanda et al, 2020; Caprara et al, 2009; Delatte et al, 2013; Fred et al, 2018; Setbon & Raude, 2008).…”

Section: Introductionmentioning

confidence: 99%

The Mosquito, the Virus, the Climate: An Unforeseen Réunion in 2018

DiSera¹,

Sjödin

Rocklöv

et al. 2020

GeoHealth

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The 2018 outbreak of dengue in the French overseas department of Réunion was unprecedented in size and spread across the island. This research focuses on the cause of the outbreak, asserting that climate played a large role in the proliferation of the Aedes albopictus mosquitoes, which transmitted the disease, and led to the dengue outbreak in early 2018. A stage‐structured model was run using observed temperature and rainfall data to simulate the life cycle and abundance of the Ae. albopictus mosquito. Further, the model was forced with bias‐corrected subseasonal forecasts to determine if the event could have been forecast up to 4 weeks in advance. With unseasonably warm temperatures remaining above 25°C, along with large tropical‐cyclone‐related rainfall events accumulating 10–15 mm per event, the modeled Ae. albopictus mosquito abundance did not decrease during the second half of 2017, contrary to the normal behavior, likely contributing to the large dengue outbreak in early 2018. Although subseasonal forecasts of rainfall for the December–January period in Réunion are skillful up to 4 weeks in advance, the outbreak could only have been forecast 2 weeks in advance, which along with seasonal forecast information could have provided enough time to enhance preparedness measures. Our research demonstrates the potential of using state‐of‐the‐art subseasonal climate forecasts to produce actionable subseasonal dengue predictions. To the best of the authors' knowledge, this is the first time subseasonal forecasts have been used this way.

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Section: Introductionmentioning

confidence: 99%

The Mosquito, the Virus, the Climate: An Unforeseen Réunion in 2018

DiSera¹,

Sjödin

Rocklöv

et al. 2020

GeoHealth

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show abstract

“…In several recent studies, the role of drought in altering the way water storage occurs in urban landscapes has been highlighted as a potential key factor in Ae. aegypti habitat in urban environments [54][55][56][57][58][59][60]. Given this was a particularly dry year, in an already arid environment, the role of precipitation in the timing of Ae.…”

Section: Discussionmentioning

confidence: 99%

Household and climate factors influence Aedes aegypti presence in the arid city of Huaquillas, Ecuador

et al. 2021

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Arboviruses transmitted by Aedes aegypti (e.g., dengue, chikungunya, Zika) are of major public health concern on the arid coastal border of Ecuador and Peru. This high transit border is a critical disease surveillance site due to human movement-associated risk of transmission. Local level studies are thus integral to capturing the dynamics and distribution of vector populations and social-ecological drivers of risk, to inform targeted public health interventions. Our study examines factors associated with household-level Ae. aegypti presence in Huaquillas, Ecuador, while accounting for spatial and temporal effects. From January to May of 2017, adult mosquitoes were collected from a cohort of households (n = 63) in clusters (n = 10), across the city of Huaquillas, using aspirator backpacks. Household surveys describing housing conditions, demographics, economics, travel, disease prevention, and city services were conducted by local enumerators. This study was conducted during the normal arbovirus transmission season (January—May), but during an exceptionally dry year. Household level Ae. aegypti presence peaked in February, and counts were highest in weeks with high temperatures and a week after increased rainfall. Univariate analyses with proportional odds logistic regression were used to explore household social-ecological variables and female Ae. aegypti presence. We found that homes were more likely to have Ae. aegypti when households had interruptions in piped water service. Ae. aegypti presence was less likely in households with septic systems. Based on our findings, infrastructure access and seasonal climate are important considerations for vector control in this city, and even in dry years, the arid environment of Huaquillas supports Ae. aegypti breeding habitat.

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“…Additional research regarding the availability, pricing, quality, and acceptability of lids should be explored to inform behavior change messaging and campaigns. Additional resources and infrastructural interventions may be required to address water security and sanitation concerns in the region, as these are key drivers of unsafe water storage practices [ 8 , 27 ].…”

Section: Discussionmentioning

confidence: 99%

“…aegypti mosquitoes are historically a challenge for vector control programs; despite concerted elimination efforts since the 1950s, a resurgence of the arboviral diseases they transmit has been reported in recent years [ 4 , 5 ]. This resurgence is in large part due to rapid, unmanaged urbanization in tropical cities, human migration, globalization, environmental changes, erratic water supplies leading to water shortages and insecurity, growing insecticide resistance, and ineffective or unsustainable vector control [ 6 – 8 ]. Eliminating Ae.…”

Section: Introductionmentioning

confidence: 99%

Use of effective lids reduces presence of mosquito larvae in household water storage containers in urban and peri-urban Zika risk areas of Guatemala, Honduras, and El Salvador

et al. 2021

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Background In 2015, an outbreak of Zika virus spread across Latin America and the Caribbean (LAC). Public health programs promoted vector control behaviors, including covering water storage containers with lids. Such approaches disrupt Zika transmission by eliminating the habitats of the Aedes aegypti mosquito, which breeds in stagnant water. Methods A quantitative household survey and observation checklist with trained enumerators were undertaken between August and October 2018 in selected urban/peri-urban USAID implementation communities in El Salvador, Guatemala, and Honduras. The survey included questions regarding knowledge, attitudes, and practices related to Zika virus. An accompanying checklist was implemented to observe water storage containers, including for short-term and long-term water use. The characteristics of these containers were tabulated, including the presence of a lid. The lids were examined for key features to determine their potential effectiveness to prevent mosquito breeding: fully covering and sealing the container, not having holes, and not having water on them (potentially creating a secondary breeding site). Multivariate logistic regression was used to estimate the effectiveness of lid types and characteristics on the presence of larvae. Results Overall, in adjusted models, using an effective lid versus no lid was associated with a 94% decrease in odds of larval presence in long-term water storage containers (odds ratio = 0.06; 95% confidence interval [0.029, 0.152]); however, similar impacts were not observed for washbasins in the adjusted models. Models adjusted for household wealth, receiving a visit from a vector control technician, scrubbing the container in the last 7 days, and perception of more mosquitoes around. Conclusions Effective lids, if made available and coupled with complementary behavioral messaging, may reduce transmission of Zika and other Aedes mosquito-borne diseases in the LAC region.

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Prioritizing Water Security in the Management of Vector‐Borne Diseases: Lessons From Oaxaca, Mexico

Cited by 12 publications

References 22 publications

The Mosquito, the Virus, the Climate: An Unforeseen Réunion in 2018

The Mosquito, the Virus, the Climate: An Unforeseen Réunion in 2018

Household and climate factors influence Aedes aegypti presence in the arid city of Huaquillas, Ecuador

Use of effective lids reduces presence of mosquito larvae in household water storage containers in urban and peri-urban Zika risk areas of Guatemala, Honduras, and El Salvador

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