Publications by authors named "J Guillermo Estrada-Franco"
Chikungunya virus (CHIKV) was isolated from humans in an outbreak of a febrile illness during July and August 2015 in the central valleys of Chiapas, Mexico. Sera obtained from 80 patients were tested for CHIKV RNA by reverse transcriptase polymerase chain reaction (RT-PCR) and for IgM and IgG antibodies by an enzyme linked immunoassay and a commercial indirect immunofluorescence test for CHIKV and dengue virus (DENV). Of the 80 patients, 67 were positive, including 50 for RNA and 17 for IgM.
View Article and Find Full Text PDFFIRST RECORDS OF AEDES TORMENTOR AND CULEX PANOCOSSA AS A RESULT OF VECTOR SURVEILLANCE ACTIVITIES CONDUCTED DURING THE CHARACTERIZATION OF FOCI OF EASTERN EQUINE ENCEPHALITIS IN TAMAULIPAS, MEXICO.
J Am Mosq Control Assoc
September 2024
Article Synopsis
- The study presents the first records of two mosquito species, Aedes tormentor and Culex panocossa, found during vector surveillance in Tamaulipas, Mexico, an area linked to eastern equine encephalitis.
- Aedes tormentor had previously been noted in Central America and other Mexican states but is now confirmed to have its southernmost range in Tamaulipas.
- Tamaulipas is reported to have 82 different mosquito species, ranking fourth in species diversity among 11 states that have undergone detailed mosquito distribution studies.
Effectiveness of mass trapping interventions using autocidal gravid ovitraps (AGO) for the control of the dengue vector, Aedes (Stegomyia) aegypti, in Northern Mexico.
Parasit Vectors
August 2024
Background: Mosquito-borne diseases, such as malaria, dengue, Zika and chikungunya, pose significant public health threats in tropical and subtropical regions worldwide. To mitigate the impact of these diseases on human health, effective vector surveillance and control strategies are necessary. Traditional vector control methods, which rely on chemical agents such as insecticides and larvicides, face challenges such as resistance and environmental concerns.
View Article and Find Full Text PDFArticle Synopsis
- Chagas disease is caused by a parasite and is transmitted by triatomine bugs; it poses a significant risk to humans, especially in countries like Mexico where domestic animals, like dogs, can be a source of infection.
- A study tested 296 dogs in two Mexican cities for Chagas disease using methods like quantitative PCR and antibody assays, revealing a low prevalence of infection among dogs (3.4% positivity, with only 0.7% found through DNA testing).
- The findings highlight the importance of dogs in monitoring the disease and the need for better diagnostic tools and surveillance in households to manage Chagas disease effectively.
Article Synopsis
- Aedes albopictus is a disease-carrying mosquito, and researchers are exploring effective ways to attract these mosquitoes using different plant infusions.
- Four types of grass infusions (Cenchrus purpureus, Cyanodon dactylon, Megathyrus maximus, Pennisetum ciliare) were tested in various settings to see which would effectively attract gravid (egg-laying) females.
- The study found Cynodon dactylon was attractive in the lab, while both Cynodon dactylon and Megathyrus maximus were attractive in semi-field settings; however, no infusions attracted mosquitoes in field conditions after a 14-week trial, suggesting more research is needed for real-world application.