Abstract Introduction Ambulatory blood pressure (BP) monitoring encapsulates 24-h BP patterns across the sleep-wake cycle and provides a comprehensive assessment of BP regulation with certain features, such as sleep-time dipping, that can better predict health outcomes than traditional office BP measurements. However, 24-h BP patterns remain understudied in Latino populations, especially older adults. This pilot study investigated the feasibility of continuously ambulatory BP monitoring blood pressure with portable devices in Latinos with dementia. Methods Eight participants (4 with Alzheimer’s disease, 1 with Frontotemporal dementia, 3 controls; age range 45.8-80.3 years) from the ReDLat cohort (Multi-Partner Consortium to Expand Dementia Research in Latin America) were enrolled for a 48-h ambulatory BP assessment with hourly measurements using a portable arm-cuff device. Participants also answered six questions to evaluate: (1) device adaption, (2) measurement frequency tolerability, (3) study duration acceptability, (4) perceived value of the assessment, (5) willingness to perform the assessment again, and (6) likelihood of recommending the assessment to others. Results The study yielded high-quality recordings with minimal missing BP measurements (range: 0%-14.1%; mean: 8.9%). Device adaptation improved over time, with 75% (6/8) reporting better tolerance on the second day and 25% (2/8) reporting consistently good tolerance across both days. All participants reported that hourly BP measurement was tolerable, and majority (7/8, 87.5%) found 48-h monitoring acceptable. Seven participants (87.5%) believed that the assessment was valuable, were willing to participate again, and likely recommend to others the assessment. Conclusion Our findings demonstrate that 48-hour ambulatory BP monitoring is feasible and well-tolerated among older Latino adults with mild to moderate dementia in Latin American settings. Further feasibility testing should be performed in large samples and other populations, including individuals at later stages of dementia and in different countries.

Small mammals present in areas where hantavirus cardiopulmonary syndrome (HCPS) cases had occurred in central and southern Chile were captured and analyzed to evaluate the abundance of rodents and seroprevalence rates of antibodies to Andes orthohantavirus (ANDV). Sampling areas ranged from the Coquimbo to Aysén regions (30–45° S approx.) regions. Ninety-two sites in peridomestic and countryside areas were evaluated in 19 years of sampling. An antibody against ANDV was detected by strip immunoassay in 58 of 1847 specimens captured using Sherman traps. Of the eleven species of rodents sampled, Abrothrix olivacea, Oligoryzomys longicaudatus and Abrothrix hirta were the most frequently trapped. O. longicaudatus had the highest seropositivity rate, and by logistic regression analysis, O. longicaudatus of at least 60 g had 80% or higher probability to be seropositive. Sex, age and wounds were significantly related to seropositivity only for O. longicaudatus. Across administrative regions, the highest seropositivity was found in the El Maule region (34.8–36.2° S), and the highest number of HCPS cases was registered in the Aysén region. Our results highlight the importance of long term and geographically extended studies, particularly for highly fluctuating pathogens and their reservoirs, to understand the implications of the dynamics and transmission of zoonotic diseases in human populations.