**3. Description of data**

This section shows the application of a spatial model taking into account the social, climatic, and geographical characteristics of the municipalities of the state of Chiapas in relation to dengue virus infections registered from January to August of the year 2019.

#### **3.1 Study area**

Dengue disease is endemic to the state of Chiapas with scattered case reports, this is due to the different geographic characteristics of the state, such as the altitude of its municipalities and its border condition with the country of Guatemala. It is known that at different altitudes, in the regions, the climatic conditions tend to vary and this can favor the reproduction of the vector. The state of Chiapas is divided into 118 municipalities, each with different sociodemographic and climatic conditions. The population density, according to the INEGI, is around 5, 544 million inhabitants; being the state capital, Tuxtla Gutiérrez, the municipality with the highest population density; for the year 2019, 604, 147 inhabitants were registered [37].

#### **3.2 Data collection**

The data, which were collected at the municipal level, being 36 the municipalities that registered positive cases of dengue and were considered for the analysis, were obtained from different sources that are mentioned below.

#### *3.2.1 Dengue cases*

The database with dengue cases registered in the state of Chiapas, during the period January–August 2019, was obtained from the Secretary of Health of the state of Chiapas, in collaboration with the area of vector-borne diseases. This database is updated week by week, fulfilling 52 Epidemiological Weeks (EW) reports per year.
