Within the framework of the Disease Elimination Initiative, PAHO supported the implementation of a population-based trachoma prevalence survey in five highly vulnerable municipalities in Chiapas, as part of efforts to assess and sustain the status of elimination of trachoma as a public health problem in Mexico.

Technical cooperation included the application of a standardized protocol with serological sampling, which will enable estimates of the prevalence of other diseases of interest, as well as the incorporation of a systematic assessment of water and sanitation conditions as key determinants. This exercise strengthened integrated surveillance and national analytical capacity, generating evidence to inform decision-making and target interventions in territories with longstanding gaps.

By consolidating information and surveillance systems aligned with international standards, the country is strengthening its capacity to prevent the reemergence of trachoma and to advance the elimination of other neglected diseases, with sustained benefits for ocular health, quality of life, and overall health and well-being among populations in situations of vulnerability.

Photo caption: Field team training in Chiapas as part of post-elimination surveillance

Credit: PAHO - A. Iván López