What question did this study set out to answer?

To identify and characterize persistent urban transmission hotspots of dengue, chikungunya, and Zika across endemic cities to support targeted vector control and disease risk stratification.

May 1, 2021The Lancet Planetary HealthOpen Access

Identifying urban hotspots of dengue, chikungunya, and Zika transmission in Mexico to support risk stratification efforts: a spatial analysis

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Authors

FDFelipe Dzul-ManzanillaInstituto Nacional de Salud Pública FCFabián Correa‐MoralesInstituto Nacional de Perinatología ACAzael Che‐MendozaCenters for Disease Control and Prevention

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Implication

Spatial analysis uncovers persistent transmission hotspots for multiple arboviruses across urban populations, indicating that targeted vector control could optimize disease prevention.

Key Points

To identify and characterize persistent urban transmission hotspots of dengue, chikungunya, and Zika across endemic cities to support targeted vector control and disease risk stratification.
Aggregated geocoded clinical records of dengue (n=128,507), chikungunya (n=4,752), and Zika (n=25,755) from Jan 1, 2008, to Dec 31, 2016, at the census-tract level across nine endemic cities in southern Mexico.
Applied the Getis-Ord Gi*(d) statistic on yearly datasets to identify spatial disease hotspots and calculated Kendall's W coefficient to quantify spatial distribution agreement across the three arboviruses.
Persistent transmission hotspots encompassed a mean of 17.6% (SD 4.7) of city areas, accounting for 25.6% (SD 9.7; range 12.8–43.0) of the population and 32.1% (SD 10.5; range 19.6–50.5) of all reported Aedes-borne cases.
Hotspot overlap reached 61.7% between dengue and Zika and 53.3% between dengue and chikungunya, with 2008–2016 dengue hotspots significantly associated with 2017–2020 dengue hotspots in five of nine cities.

Cite This Study

Dzul-Manzanilla et al. (2021) studied this question.

synapsesocial.com/papers/6a1ff79fc1b320180d0db5ce https://doi.org/10.1016/s2542-5196(21)00030-9

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Implication

Spatial analysis uncovers persistent transmission hotspots for multiple arboviruses across urban populations, indicating that targeted vector control could optimize disease prevention.

Identifying urban hotspots of dengue, chikungunya, and Zika transmission in Mexico to support risk stratification efforts: a spatial analysis

Discussion

Member takes

Implication

Key Points

Cite This Study

Identifying urban hotspots of dengue, chikungunya, and Zika transmission in Mexico to support risk stratification efforts: a spatial analysis

Discussion

Member takes

Implication

Key Points

Cite This Study

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