Outbreak of persistently infected heifer calves with bovine viral diarrhea virus subgenotypes 1b and 1d in a BVDV-vaccinated open dairy herd
This study was conducted in a high-yielding open dairy cattle herd that frequently acquired heifers from neighboring areas for replacement. The farm monitors the birth of PI calves by screening all calves born using an ELISA (IDEXX) for BVDV antigen detection. All calves aged 1-7 days were evaluated. For positive and suspected results, the ELISA was repeated when the calves were close to one month old. A total of 294 heifer calves were evaluated between February and March 2021. Of these, 99 (33.7%) had positive ELISA results and were considered PI calves. To evaluate the predominant BVDV species and subgenotypes in this ou...
Source: Acta Tropica - March 26, 2024 Category: Infectious Diseases Authors: Juliana Torres Tomazi Fritzen Natalia Zaparoli Zucoloto Elis Lorenzetti Alice Fernandes Alfieri Amauri Alcindo Alfieri Source Type: research
Molecular characterization of Cryptosporidium spp. and Giardia duodenalis in pet cats in Henan Province, central China
Acta Trop. 2024 Mar 24:107188. doi: 10.1016/j.actatropica.2024.107188. Online ahead of print.ABSTRACTCryptosporidium spp. and G. duodenalis often infect humans, cats, and other mammals, causing diarrhea and being responsible for numerous outbreaks of waterborne and foodborne infections worldwide. The rapid increase in the number of pet cats poses a substantial public health risk. However, there were few reports about the infection of Cryptosporidium spp. and G. duodenalis infections in pet cats in Henan Province, central China. Thus, to understand the prevalence and genetic distribution of Cryptosporidium spp. and G. duode...
Source: Acta Tropica - March 26, 2024 Category: Infectious Diseases Authors: Liangliang Li Yuzhen Sui Xinmiao Li Pengtao Song Guizhen Chen Hu Liu Shoujun Zuo Jinjie Guo Qiong Wang Qiyuan Sun Hongyu Dai Junqiang Li Tao Zhang Fang Liu Longxian Zhang Haiju Dong Source Type: research
Vector mosquito distribution and richness are predicted by socio-economic, and ecological variables
Acta Trop. 2024 Mar 22:107179. doi: 10.1016/j.actatropica.2024.107179. Online ahead of print.ABSTRACTMosquitoes of vectorial importance represent a ubiquitous and constant threat of potentially devastating arboviral outbreaks. Our ability to predict such outcomes is still restricted. To answer this, we have used an extensive data collection of 23 vector and 233 non-vector mosquito species distributed throughout the Mexican territory and linked them to social and environmental factors. Our aim was to predict vector and non-vector mosquitoes' distribution and species richness based on socioeconomic and environmental data. We...
Source: Acta Tropica - March 24, 2024 Category: Infectious Diseases Authors: Stephany Rodr íguez-González M ónica Izquierdo-Suzán Maya Rocha-Ortega Alex C órdoba-Aguilar Source Type: research
Nanoemulsions containing amphotericin b and paromomycin for the treatment of cutaneous leishmaniasis
CONCLUSION: It is possible to develop a NE for the treatment of CL; however, complementary studies regarding the antileishmanial activity of NE should be carried out.PMID:38522630 | DOI:10.1016/j.actatropica.2024.107189 (Source: Acta Tropica)
Source: Acta Tropica - March 24, 2024 Category: Infectious Diseases Authors: Nicolas Fontenele Callipo Cunha Luciana Betzler de Oliveira de Siqueira Andreza Raposo Garcia Igor Almeida Rodrigues Ana Paula Dos Santos Matos Eduardo Ricci J únior Mariana Sato de Souza Bustamante Monteiro Source Type: research
Vector mosquito distribution and richness are predicted by socio-economic, and ecological variables
Acta Trop. 2024 Mar 22:107179. doi: 10.1016/j.actatropica.2024.107179. Online ahead of print.ABSTRACTMosquitoes of vectorial importance represent a ubiquitous and constant threat of potentially devastating arboviral outbreaks. Our ability to predict such outcomes is still restricted. To answer this, we have used an extensive data collection of 23 vector and 233 non-vector mosquito species distributed throughout the Mexican territory and linked them to social and environmental factors. Our aim was to predict vector and non-vector mosquitoes' distribution and species richness based on socioeconomic and environmental data. We...
Source: Acta Tropica - March 24, 2024 Category: Infectious Diseases Authors: Stephany Rodr íguez-González M ónica Izquierdo-Suzán Maya Rocha-Ortega Alex C órdoba-Aguilar Source Type: research
Nanoemulsions containing amphotericin b and paromomycin for the treatment of cutaneous leishmaniasis
CONCLUSION: It is possible to develop a NE for the treatment of CL; however, complementary studies regarding the antileishmanial activity of NE should be carried out.PMID:38522630 | DOI:10.1016/j.actatropica.2024.107189 (Source: Acta Tropica)
Source: Acta Tropica - March 24, 2024 Category: Infectious Diseases Authors: Nicolas Fontenele Callipo Cunha Luciana Betzler de Oliveira de Siqueira Andreza Raposo Garcia Igor Almeida Rodrigues Ana Paula Dos Santos Matos Eduardo Ricci J únior Mariana Sato de Souza Bustamante Monteiro Source Type: research
Vector mosquito distribution and richness are predicted by socio-economic, and ecological variables
Acta Trop. 2024 Mar 22:107179. doi: 10.1016/j.actatropica.2024.107179. Online ahead of print.ABSTRACTMosquitoes of vectorial importance represent a ubiquitous and constant threat of potentially devastating arboviral outbreaks. Our ability to predict such outcomes is still restricted. To answer this, we have used an extensive data collection of 23 vector and 233 non-vector mosquito species distributed throughout the Mexican territory and linked them to social and environmental factors. Our aim was to predict vector and non-vector mosquitoes' distribution and species richness based on socioeconomic and environmental data. We...
Source: Acta Tropica - March 24, 2024 Category: Infectious Diseases Authors: Stephany Rodr íguez-González M ónica Izquierdo-Suzán Maya Rocha-Ortega Alex C órdoba-Aguilar Source Type: research
Nanoemulsions containing amphotericin b and paromomycin for the treatment of cutaneous leishmaniasis
CONCLUSION: It is possible to develop a NE for the treatment of CL; however, complementary studies regarding the antileishmanial activity of NE should be carried out.PMID:38522630 | DOI:10.1016/j.actatropica.2024.107189 (Source: Acta Tropica)
Source: Acta Tropica - March 24, 2024 Category: Infectious Diseases Authors: Nicolas Fontenele Callipo Cunha Luciana Betzler de Oliveira de Siqueira Andreza Raposo Garcia Igor Almeida Rodrigues Ana Paula Dos Santos Matos Eduardo Ricci J únior Mariana Sato de Souza Bustamante Monteiro Source Type: research
Neospora caninum antibodies in bulk tank milk from dairy cattle herds in Italy in relation to reproductive and productive parameters and spatial analysis
Acta Trop. 2024 Mar 21:107194. doi: 10.1016/j.actatropica.2024.107194. Online ahead of print.ABSTRACTAmong the available diagnostic techniques, antibody detection in bulk tank milk (BTM) represents a useful tool to estimate and monitor Neospora caninum herd prevalence. To evaluate the prevalence of N. caninum and the effect of parasite infection on herd performances, BTM samples collected from 586 dairy herds located in one of the largest dairy production areas in Italy (Lombardy) were analyzed by an indirect ELISA to detect anti-N. caninum specific antibodies. Generalized linear models (GLMs) were developed. A purely spat...
Source: Acta Tropica - March 23, 2024 Category: Infectious Diseases Authors: Luca Villa Carolina Allievi Anna Rita Di Cerbo Sergio Aurelio Zanzani Flavio Sommariva Lucio Zanini Michele Mortarino Maria Teresa Manfredi Source Type: research
Anti-Opisthorchis felineus effects of artemisinin derivatives: An in vitro study
CONCLUSIONS: Artemisinin derivatives (AS, AM, and DHA) have good anthelmintic efficacy against the trematode O. felineus, and the action of these substances is comparable to (and sometimes better than) the effects of PZQ.PMID:38521124 | DOI:10.1016/j.actatropica.2024.107196 (Source: Acta Tropica)
Source: Acta Tropica - March 23, 2024 Category: Infectious Diseases Authors: Denis Ponomarev Maria Lvova Viatcheslav Mordvinov Irina Chidunchi Alexander Dushkin Damira Avgustinovich Source Type: research
Prevalence and Genetic Diversity of Simian Malaria in Wild Macaque Populations Across Thailand: Implications for Human Health
This study aims to address several research questions, including the prevalence and distribution of simian malaria in these two Thai wild macaque species, variations in infection between different macaque species and between M. fascicularis subspecies, and the genetic composition of these pathogens. Blood samples were collected from 82 M. mulatta and 690 M. fascicularis across 15 locations in Thailand, as well as two locations in Vietnam and Myanmar. We employed quantitative real-time PCR targeting the Plasmodium genus-specific 18S ribosomal RNA (rRNA) gene to detect malaria infection, with a limit of detection set at 1,21...
Source: Acta Tropica - March 22, 2024 Category: Infectious Diseases Authors: Kriangkrai Karnchaisri Nicholas P J Day Arjen M Dondorp Suchinda Malaivijitnond Mallika Imwong Source Type: research
Epidemiological investigation of Cryptosporidium in children with diarrhea in middle Inner Mongolia, China
Acta Trop. 2024 Mar 20:107177. doi: 10.1016/j.actatropica.2024.107177. Online ahead of print.ABSTRACTCryptosporidia (Cryptosporidium) is a protozoan that is widely parasitic in the intestinal cells of humans and animals, and it is also an important zoonotic parasite. However, there is no epidemiological investigation on Cryptosporidium spp. infection in infants with diarrhea of Inner Mongolia, the largest livestock region in China. To investigate the prevalence of Cryptosporidium, 2435 fresh fecal samples were collected from children with diarrhea in Inner Mongolia Maternal and Child Health Care Hospital. Molecular charact...
Source: Acta Tropica - March 22, 2024 Category: Infectious Diseases Authors: Wenhui Guo Xinyu Xue Ruifeng Li Ru Liang Zixuan Wang Jiashan Qin Chao Duan Tieyun Chen Xinlei Yan Source Type: research
Prevalence and Genetic Diversity of Simian Malaria in Wild Macaque Populations Across Thailand: Implications for Human Health
This study aims to address several research questions, including the prevalence and distribution of simian malaria in these two Thai wild macaque species, variations in infection between different macaque species and between M. fascicularis subspecies, and the genetic composition of these pathogens. Blood samples were collected from 82 M. mulatta and 690 M. fascicularis across 15 locations in Thailand, as well as two locations in Vietnam and Myanmar. We employed quantitative real-time PCR targeting the Plasmodium genus-specific 18S ribosomal RNA (rRNA) gene to detect malaria infection, with a limit of detection set at 1,21...
Source: Acta Tropica - March 22, 2024 Category: Infectious Diseases Authors: Kriangkrai Karnchaisri Nicholas P J Day Arjen M Dondorp Suchinda Malaivijitnond Mallika Imwong Source Type: research
Epidemiological investigation of Cryptosporidium in children with diarrhea in middle Inner Mongolia, China
Acta Trop. 2024 Mar 20:107177. doi: 10.1016/j.actatropica.2024.107177. Online ahead of print.ABSTRACTCryptosporidia (Cryptosporidium) is a protozoan that is widely parasitic in the intestinal cells of humans and animals, and it is also an important zoonotic parasite. However, there is no epidemiological investigation on Cryptosporidium spp. infection in infants with diarrhea of Inner Mongolia, the largest livestock region in China. To investigate the prevalence of Cryptosporidium, 2435 fresh fecal samples were collected from children with diarrhea in Inner Mongolia Maternal and Child Health Care Hospital. Molecular charact...
Source: Acta Tropica - March 22, 2024 Category: Infectious Diseases Authors: Wenhui Guo Xinyu Xue Ruifeng Li Ru Liang Zixuan Wang Jiashan Qin Chao Duan Tieyun Chen Xinlei Yan Source Type: research
Enterocytozoon bieneusi and Cryptosporidium bat genotype XXI and bat genotype XXII in fruit bats (Rousettus leschenaultii) inhabiting a tropical park in Hainan Province, China
This study aimed to evaluate the occurrence and genetic diversity of the two pathogens in fruit bats (Rousettus leschenaultii) in Hainan, China. Ten fresh fecal specimens of fruit bats were collected from Wanlvyuan Gardens, Haikou, China. The fecal samples were tested for E. bieneusi and Cryptosporidium spp. using Polymerase Chain Reaction (PCR) analysis and sequencing the internal transcribed spacer (ITS) region and partial small subunit of ribosomal RNA (SSU rRNA) gene, respectively. Genetic heterogeneity across Cryptosporidium spp. isolates was assessed by sequencing 4 microsatellite/minisatellite loci (MS1, MS2, MS3, a...
Source: Acta Tropica - March 21, 2024 Category: Infectious Diseases Authors: Wei Zhao Guangxu Ren Jialiang Mao Huicong Huang Gang Lu Shaohui Liang Source Type: research
