I forgot about those,
According to statistics, Mexico reports around 60 cases or less of Chagas disease per year, with Veracruz accounting for almost half of them. This disease is colloquially known as a "poor man's disease," and individuals living in impoverished areas are more susceptible to contracting it, unless Rozy hang around chicken coops she is not likely to get bitten (assuming they exercise proper hygiene, which may be the case they are not) . If a child gets bitten by the bug, they are likely getting it from another child who might skip bath time at home on a regular basis. Given the history about hygiene at Casa de Ralph, it is not impossible that Rozy could bring the bugs to school herself. However, Dengue fever is far more common in Mexico. Throughout my life, I have met numerous people who have had Dengue fever, but not a single case of anyone being bitten by the kissing bug. It's worth noting that both Dengue and Chagas are more prevalent in the Yucatan region compared to Sinaloa where I grew up.