Analysis of the correlation between climatic variables and Dengue cases in the city of Alagoinhas/BA

Abstract

The Aedes aegypti mosquito is the main vector of dengue and is a synanthropic insect and due to its anthropophilic nature, it has specific reproductive needs. In addition to that, it also needs tropical regions that provide climate-prone conditions that favor vector development. In this article, we propose the cross-correlation analysis between the climatic variables air temperature, relative humidity, weekly average precipitation and dengue cases in the period from 2017 to early 2021 in the municipality of Alagoinhas, Bahia, Brazil. To do so, we apply the trend-free cross-correlation, $$\rho DCCA$$ ρ D C C A , being a generalization of the fluctuation analysis without trend, where we calculate the cross correlation between time series to establish the influence of these variables on the occurrence of dengue disease. The results obtained here were a moderate correlation between relative humidity and the incidence of dengue cases, and a low correlation for relative air temperature and precipitation. However, the predominant factor in the incidence of dengue cases in the city of Alagoinhas is relative humidity and not air temperature and precipitation.

Development of Vaccines against Emerging Mosquito-Vectored Arbovirus Infections

“…A similar increase in DENV disease occurrence has been reported in the Americas. In Brazil, the disease is expanding to southern regions that were once off-limits to A. aegypti [ 21 ]. The same has occurred in Mexico, where this mosquito species was for the first time detected in Mexico City, at an altitude of 2240 m too high to allow mosquitos survive some years ago [ 22 ].…”

Gambaran Faktor yang Memengaruhi Tren Angka Kejadian dan Keparahan Demam Berdarah Dengue pada Anak di RSUP Prof. Dr. R. D. Kandou Manado Periode 2020-2022

“…Di sisi lain, suhu rerata mempunyai pengaruh kecil terhadap penularan DBD di negara-negara tropis karena suhunya relatif konstan. 12 Hasil uji korelasi penelitian ini menunjukkan bahwa kelembaban udara tidak berhubungan dengan kejadian DBD, yang sejalan dengan penelitian oleh Figueredo et al 13 Walaupun demikian terdapat pula penelitian yang menyatakan bahwa kelembaban udara memiliki hubungan terhadap kejadian DBD, salah satunya yakni penelitian oleh Hasanah et al . 14 Pada dasarnya, kelembaban rendah memperpendek umur nyamuk, sedangkan kelembaban tinggi memperpanjang umur nyamuk.…”