Listar por autor "Rivera Ramirez, Tatiana"

Ground water tanks are known to be preferred Aedes aegypti oviposition places providing opportunities for adult and larvae control. Therefore, a dual-effect insecticidal coating (IC) (alphacypermethrin/ pyriproxyfen) with ...

Arboviral diseases remain a significant health concern worldwide, with over half the world's population at risk for dengue alone. Without a vaccine or targeted treatment, the most effective strategy of prevention is vector ...

Aedes aegypti control in breeding sites through an insecticidal coating with dual effect: Laboratory trials and safety assessment
...
Cardenas, Rocio | 2024-10-22

Ground water tanks are known to be preferred Aedes aegypti oviposition places providing opportunities for adult and larvae control. Therefore, a dual-effect insecticidal coating (IC) (alphacypermethrin/ pyriproxyfen) with a slow-release mechanism and safe for users could be applied within Aedes spp. breeding sites, representing a promising option. Bioassays were designed to determine the mortality and sterilizing effects on gravid mosquitoes exposed to IC. The effect of inhibition of emergence was evaluated in eggs, larvae and pupae exposed in different containers. For the water safety assessment concentrations of active ingredients were determined by reverse phase high performance liquid chromatography (RP-HPLC) and the health risk was calculated. The IC applied to the interior walls of water-holding containers showed efficacy against Ae. aegypti in terms of high gravid-female mortality (81% at 24 h, p < 0.01), sterilizing effect (inhibition of oviposition by 63%, p < 0.01) and emergence inhibition (100% in eggs, L3 and L4; 97% in pupae). The offspring rate was reduced [only 0.15 (38/250) new adults emerged per exposed gravid females as against 11.90 per unexposed female (2976/250) at baseline]. Emergence inhibition was recorded up to 12 months and adult mortality >80% up to 6 months. The use of water stored in treated containers, either for washing or drinking, is not expected to pose a health risk to users. IC applied to domestic water containers has dual and complementary action that reduces Ae. aegypti densities (immature and adult stages). This represents baseline information for a cluster randomized efficacy trial in Colombia.

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WhatsApp-based intervention in urban Colombia to support the prevention of arboviral diseases: a feasibility study
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Carrillo, Maria Angelica | 2024-05-24

Arboviral diseases remain a significant health concern worldwide, with over half the world's population at risk for dengue alone. Without a vaccine or targeted treatment, the most effective strategy of prevention is vector management with community involvement. mHealth interventions, like WhatsApp, offer promising results for engaging communities and promoting healthier behaviors. This study explores the feasibility of integrating WhatsApp in vector control activities to improve arbovirus prevention in Colombia. A mixed-methods approach was employed to assess the WhatsApp-based intervention. WhatsApp messages were sent to 45 community women for 5 weeks to increase their knowledge and practices about dengue, Zika, and chikungunya. Pre-and-post surveys and focus group discussions were conducted in community settings to measure the feasibility and acceptability of this intervention. Chat reviews were done to assess the usability of users. A total of 1566 messages were exchanged in 45 WhatsApp chats. High acceptance and good usability (82% of users used the app for replying) were reported in this study. WhatsApp messages were perceived as short, clear, and enjoyable. Users liked the frequency, and design of messages. Pre- and post-surveys demonstrated improvements in the knowledge and practices of arboviral diseases. The intention to apply this knowledge in practice was reflected in a significant improvement, particularly in cleaning the laundry tank once a week (pre 62.1% to post 89.6%, p < 0.008). This study suggests that using WhatsApp as an additional tool could be a feasible, acceptable, and affordable strategy for improving the adoption of better practices in the prevention of arboviral diseases.

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Listar por autor "Rivera Ramirez, Tatiana"

Aedes aegypti control in breeding sites through an insecticidal coating with dual effect: Laboratory trials and safety assessment

WhatsApp-based intervention in urban Colombia to support the prevention of arboviral diseases: a feasibility study

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Aedes aegypti control in breeding sites through an insecticidal coating with dual effect: Laboratory trials and safety assessment

WhatsApp-based intervention in urban Colombia to support the prevention of arboviral diseases: a feasibility study

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Listar por autor "Rivera Ramirez, Tatiana"

Aedes aegypti control in breeding sites through an insecticidal coating with dual effect: Laboratory trials and safety assessment ﻿

WhatsApp-based intervention in urban Colombia to support the prevention of arboviral diseases: a feasibility study ﻿

Envíos recientes

Aedes aegypti control in breeding sites through an insecticidal coating with dual effect: Laboratory trials and safety assessment

WhatsApp-based intervention in urban Colombia to support the prevention of arboviral diseases: a feasibility study

Portales Institucionales

Aedes aegypti control in breeding sites through an insecticidal coating with dual effect: Laboratory trials and safety assessment

WhatsApp-based intervention in urban Colombia to support the prevention of arboviral diseases: a feasibility study