Inclusion Criteria:  Community Leaders Eligibility Criteria: After the team's identified the community, with the support of the community partners and the Community Scientific Advisory Committee, we will invite community leaders to be part of the EpI-Net training. The inclusion criteria for the community leaders to be trained in EpI-Net activities are: (1) >21 years of age, (2) living in a socially vulnerable community for COVID-19 according to the CDC-SVI; (3) self-identified as a Latino/Hispanic and; (4) be able to provide support for the EpI- Net implementation process in their communities. In-depth Interview Participants' Eligibility Criteria: The eligibility criteria for the qualitative interviews will be: (1) >21 years old, (2) living in a socially vulnerable community for COVID-19 according to the CDC-SVI (Ref); (3) self-identified as a Latino/Hispanic; (4) be part of the participant municipalities at the RCMI-CEC program or PRPHT network and (5) be able to complete an interview. Communities' Eligibility Criteria: Based on factors associated with COVID-19 complications such as high chronic disease prevalence (including obesity rates), age group distribution, population density and socioeconomic status, and COVID-19 positivity rates, we will preliminarily identify potential municipalities to be impacted by this project.Those preliminar municipalities are: Ponce, Guánica, Vieques, San Juan, Loíza, Vega Alta, Aibonito, Yauco, Mayagüez and Naranjito. Once municipalities are identified, the team will rely on the CDC-SVI index to identify the communities (within these municipalities) with higher socially vulnerability. Community Survey Eligibility Criteria: The eligibility criteria for the community survey will be: (1) >21 years old, (2) living in a socially vulnerable community for COVID-19 according to the CDC-SVI (Ref); (3) self-identified as a Latino/Hispanic; (4) be part of the participant municipalities at the RCMI-CEC program or PRPHT network and (5) be able to complete an interview. Epidemiological Syndromic Surveillance System (ESSS) Eligibility Criteria: Participants eligible to complete the ESSS are residents of Puerto Rico, 18 years of age and older.  Exclusion Criteria:  Children and adolescents are excluded from participation.