scholarly journals Chlamydia spp. in free-living domestic pigeons

2021 ◽  
Vol 10 (9) ◽  
pp. e1710917747
Author(s):  
Kelly Cristiny Gomes da Paixão Albuquerque ◽  
Bruna Alves Ramos ◽  
Andrea Viana Cruz ◽  
Sandro Patroca da Silva ◽  
Livia Medeiros Neves Casseb ◽  
...  
Keyword(s):  
Urban Areas ◽  
Animal Health ◽  
Clinical Signs ◽  
Columba Livia ◽  
Chlamydia Psittaci ◽  
Free Living ◽  
Nested Polymerase Chain Reaction ◽  
Stool Samples ◽  
Post Mortem Findings ◽  
Domestic Pigeons

Free-living Columbidae are considered the second largest reservoir of Chlamydia psittaci, transmitting the agent to humans and other animals. The present study aimed to identify the presence of Chlamydia spp. in samples of lung and stool collected from free-living domestic pigeons (Columba livia domestica) captured at the Mangal das Garças Naturalistic Park in Belém, Pará, Brazil, using semi-nested polymerase chain reaction, and also correlate the clinical and post-mortem findings of animals positive for Chlamydia spp. Among the 45 animals analyzed, 10 (22.2%) were positive for Chlamydia spp.; the positive findings originated from 5 (50%) lung samples and 5 (50%) stool samples, with no overlap between animals and samples. None of the animals evaluated in this study showed clinical signs of chlamydiosis; rather, these were only found during necropsy of positive animals, mainly through pulmonary, hepatic, splenic, and intestinal changes. These findings demonstrate that free-living pigeons can be reservoirs of Chlamydia spp. and transmit the agent silently to humans and animals, which is concerning for public and animal health, since these birds are easily found in urban areas cohabitating with humans, other species of birds, and other animals.

scholarly journals Pathogenicity and non-opportunistic character of Blastocystis spp.: a hospital-based survey in Central Cameroon

2018 ◽  
Vol 12 (05) ◽  
pp. 373-379 ◽  
Author(s):  
Stéphanie Jupsa-Mbiandou ◽  
Samuel Fosso ◽  
Edimo Billé ◽  
Tito T Mélachio-Tanekou ◽  
Gideon Ajeagah-Aghaindum ◽  
...  
Keyword(s):  
Rural Areas ◽  
Urban Areas ◽  
Age Groups ◽  
Clinical Signs ◽  
Hiv Positive ◽  
Cross Sectional ◽  
Significant Difference ◽  
Blastocystis Spp ◽  
Stool Samples ◽  
Hiv Negative

Introduction: Blastocystis spp. is a protist found in humans. Although usually the most frequent protozoa found in stool samples of both symptomatic and healthy subjects, its pathogenic or rather opportunistic role is yet to be clearly elucidated. To attempt to fill this gap, a cross-sectional study was conducted to compare the frequency of Blastocystis spp. in HIV positive (HIV+) versus HIV negative (HIV-) individuals in four health facilities of the Center Region of Cameroon. Methodology: Stool samples were collected from 283 HIV positive and 245 HIV negative subjects and analyzed using direct diagnostic tests. Results: A total of 46 (8.7%) individuals were found infected with Blastocystis spp., including 6.7% HIV positive and 11.0% HIV negative. This species was more frequent in urban and semi-urban areas than in rural areas, but evenly distributed among genders and age groups as well as among all sectors of activity. The prevalence of Blastocystis spp. (11.3%) was higher in HIV+ patients with a CD4 count ≥ 500 cells / mm3, but no significant difference was found among HIV clinical stages. Likewise prevalence, the mean number of cysts per gram of stool was similar between HIV positive and HIV negative individuals. People infected with Blastocystis spp. showed diverse clinical signs, but only flatulence was significantly more prevalent. The frequencies of these clinical signs were not related to HIV status. Conclusion: No clear relationship links the infection with Blastocystis spp. to HIV, although its presence was associated with digestive disorder, suggesting that this parasite might not be opportunist.

scholarly journals High Prevalence of Cryptosporidium meleagridis in Domestic Pigeons (Columba livia domestica) Raises a Prospect of Zoonotic Transmission in Babylon Province, Iraq

2020 ◽  
Vol 44 ((E0)) ◽  
pp. 7-13
Author(s):  
Mohammed K.A. Altamimi
Keyword(s):  
Columba Livia ◽  
Nested Polymerase Chain Reaction ◽  
Molecular Tests ◽  
Wide Range ◽  
High Prevalence ◽  
Close Proximity ◽  
Screening Study ◽  
Potential Reservoir ◽  
Polymerase Chain ◽  
Domestic Pigeons

Cryptosporidium is one of the most common protozoan’s parasites with remarkable infectivity of a wide range of animals, including mammals and birds. Domestic pigeons (Columba livia domestica) act as a potential reservoir for several species of Cryptosporidium because they live in close proximity to humans. This study was conducted to assess the genetic diversity of Cryptosporidium in domestic pigeons in Iraq. A total of one hundred samples obtained from feces of domestic pigeons in Babylon province were included. After being exposed to microbial examination, all fecal samples were subsequently screened by nested polymerase chain reaction (PCR) for the possible recognition of Cryptosporidium species. Microscopy tests detected only 14/100 (14%) of infection with Cryptosporidium, while molecular tests detected 21/100 (21%) of the same targeted parasite. Sequencing experiments showed a high prevalence of C. meleagridis with 13/21 (61.90%), followed by C. baileyi with 7/21 (33.33%), while only one infection was detected with C. hominis (1/21) (4.76%). No co-infection with mixed Cryptosporidium spp. was observed, and sex factor was not found to affect the infection rate. In conclusion, this study informed a high prevalence of C. meleagridis in domestic pigeons than both C. baileyi and C. hominis, respectively, signifying a higher zoonotic potential of C. meleagridis between domestic pigeons and their handlers. This finding may raise more questions with regard to the increasing infectivity of C. meleagridis in human. This is the first important screening study in Iraq that uses molecular methods for the detection of Cryptosporidium in domesticated pigeons.

scholarly journals Cryptosporidium spp. in Columba livia Gmelin, 1789 (Columbiformes: Columbidae) free-living pigeons from urban areas in Pelotas, Rio Grande do Sul, Brazil

2020 ◽  
Vol 44 (4) ◽  
pp. 877-881
Author(s):  
Carolina Caetano dos Santos ◽  
Sara Patron da Motta ◽  
Natália Soares Martins ◽  
Andrios da Silva Moreira ◽  
Natália Nachtigall Al-Alam ◽  
...  
Keyword(s):  
Urban Areas ◽  
Rio Grande ◽  
Columba Livia ◽  
Rio Grande Do Sul ◽  
Free Living ◽  
Cryptosporidium Spp

scholarly journals ENTEROPATHOGENS DETECTED IN A DAYCARE CENTER, SOUTHEASTERN BRAZIL: BACTERIA, VIRUS, AND PARASITE RESEARCH

2015 ◽  
Vol 57 (1) ◽  
pp. 27-32 ◽  
Author(s):  
Edna Donizetti Rossi Castro ◽  
Marcela Cristina Braga Yassaka Germini ◽  
Joana D'Arc Pereira Mascarenhas ◽  
Yvone Benchimol Gabbay ◽  
Ian Carlos Gomes de Lima ◽  
...  
Keyword(s):  
Giardia Lamblia ◽  
Urban Areas ◽  
Intestinal Parasites ◽  
Clinical Signs ◽  
Southeastern Brazil ◽  
Intestinal Infection ◽  
Fecal Samples ◽  
Daycare Center ◽  
E Coli ◽  
Stool Samples

Introduction: The objective of this study was to determine the prevalence and etiological profile of enteropathogens in children from a daycare center. Methods: From October 2010 to February 2011 stool samples from 100 children enrolled in a government daycare center in the municipality of São José do Rio Preto, in the state of São Paulo, were collected and analyzed. Results: A total of 246 bacteria were isolated in 99% of the fecal samples; 129 were in the diarrheal group and 117 in the non-diarrheal group. Seventy-three strains of Escherichia coli were isolated, 19 of Enterobacter, one of Alcaligenes and one of Proteus. There were 14 cases of mixed colonization with Enterobacter and E. coli. Norovirus and Astrovirus were detected in children with clinical signs suggestive of diarrhea. These viruses were detected exclusively among children residing in urban areas. All fecal samples were negative for the presence of the rotavirus species A and C. The presence of Giardia lamblia, Entamoeba coli, Endolimax nana and hookworm was observed. A significant association was found between food consumption outside home and daycare center and the presence of intestinal parasites. Conclusions: For children of this daycare center, intestinal infection due to pathogens does not seem to have contributed to the occurrence of diarrhea or other intestinal symptoms. The observed differences may be due to the wide diversity of geographical, social and economic characteristics and the climate of Brazil, all of which have been reported as critical factors in the modulation of the frequency of different enteropathogens.

scholarly journals Isolation of Salmonella enterica subsp. enterica (O:4,5:i) and Salmonella enterica subsp. Typhimurium from free-living domestic pigeons (Columba livia)

2014 ◽  
Vol 66 (5) ◽  
pp. 1435-1438 ◽  
Author(s):  
R.C. Rocha-e-Silva ◽  
W.M. Cardoso ◽  
R.S.C. Teixeira ◽  
Á.H. Albuquerque ◽  
R.V. Horn ◽  
...  
Keyword(s):  
Salmonella Enterica ◽  
Antibiotic Sensitivity ◽  
Columba Livia ◽  
Sensitivity Test ◽  
Bacteriological Examination ◽  
Free Living ◽  
Therapeutic Protocol ◽  
Serovar Typhimurium ◽  
Antibiotic Sensitivity Test ◽  
Domestic Pigeons

The present study reports the isolation of Salmonellaenterica in organs of free-living domestic pigeons. In the clinic examination, the presence of feces in the peri-cloacal and abdominal regions were observed, as well as symptoms such as cachexy, incoordination and opisthotonos. Before any therapeutic protocol was applied the bird died and a necropsy was then performed for the removal of spleen, liver, kidney and intestine for bacteriological examination and antibiotic sensitivity test. Salmonella enterica subsp.enterica (O:4,5:i-) and Salmonellaenterica subsp. enterica serovar Typhimurium were isolated from the liver and intestine and the sensitivity test demonstrated that these strains are sensitive to several antibiotics.

scholarly journals Clinical and serological tests for arboviruses in free-living domestic pigeons (Columba livia)

2017 ◽  
Vol 112 (8) ◽  
pp. 532-536
Author(s):  
Bruna Alves Ramos ◽  
Jannifer Oliveira Chiang ◽  
Lívia Carício Martins ◽  
Liliane Leal das Chagas ◽  
Franko de Arruda e Silva ◽  
...  
Keyword(s):  
Columba Livia ◽  
Free Living ◽  
Serological Tests ◽  
Domestic Pigeons

Pigeon rotavirus A genotype G18P[17]-associated disease outbreaks after fancy pigeon shows in Germany – a case series

2021 ◽  
Vol 49 (01) ◽  
pp. 22-27
Author(s):  
Volker Schmidt ◽  
Michael Kümpel ◽  
Kerstin Cramer ◽  
Michael Sieg ◽  
Maxi Harzer ◽  
...  
Keyword(s):  
Clinical Signs ◽  
Case Series ◽  
Disease Outbreaks ◽  
Columba Livia ◽  
Hepatic Necrosis ◽  
Chlamydia Psittaci ◽  
The Other ◽  
Rotavirus A ◽  
Virus West Nile ◽  
Rescue Center

Abstract Objective Pigeon rotavirus A (RVA) isolates of genotype G18P[17] are causing disease outbreaks and fatalities in pigeon lofts in Australia, Germany, Belgium, Denmark and USA since 2016. Most disease outbreaks have been reported from juvenile pigeons (Columba livia forma domestica). However, reports on RVA-associated disease outbreaks in fancy pigeons in connection with fancy pigeon shows in Germany are rare. Material and methods Overall 18 pigeons (16 fancy pigeons and one racing pigeon from 9 pigeon fanciers, as well as one feral pigeon from a rescue center) were sent in for routine diagnostic necropsy including histopathologic, parasitologic and microbiologic examinations. Molecular biologic examinations for detection of RVA, circovirus, Usutu virus, West Nile virus and Chlamydia psittaci were also carried out on all pigeons. An accompanying questionnaire filled in by the senders was used to generate basic information on the affected pigeon lofts. Results Disease outbreaks in juvenile and adult pigeons were reported 7–14 days after fancy pigeon shows. One fancier who had previously vaccinated his pigeons with an autogenous pigeon RVA vaccine, noted no morbidity and mortality among his pigeons and thus sent in a healthy pigeon for diagnostic purposes. Reported clinical signs in the other pigeons were regurgitation, green slimy diarrhea, anorexia, apathy and death after 24 hours. Hepatic necrosis and detection of pigeon RVA isolates of genotype G18P[17] confirmed disease outbreaks caused by pigeon RVA in all pigeons, except for the vaccinated pigeon. Besides pigeon circovirus, which was detected in 15 of 18 pigeons, all other pathogens were singular findings. Conclusion and clinical relevance In disease outbreaks following fancy pigeon shows in juvenile and adult pigeons diagnostics should include pigeon RVA of genotype G18P[17].

An Epidemiological, Diagnostic and Therapeutic Study of Giardia lamblia in Anbar Province – Iraq

2019 ◽  
Vol 9 (01) ◽  
pp. 39-45
Author(s):  
Suad Shallal Shahatha
Keyword(s):  
Teaching Hospital ◽  
Rural Areas ◽  
Giardia Lamblia ◽  
Urban Areas ◽  
Culture Media ◽  
Age Groups ◽  
Stool Samples ◽  
Women And Children ◽  
Teucrium Polium L ◽  
Therapeutic Study

This study was carried out to investigate the epidemiology of Giardia lamblia parasites in patients who visited some of the hospitals in Anbar province, which included (Fallujah Teaching Hospital, Ramadi Teaching Hospital, Ramadi Teaching Hospital for Women and Children and Hit Hospital) during by examining 864 stool samples in a direct examination method, The results revealed the infection rate was 41.7 % and the percentage of infection among males 47.8% is higher than that of females 35.4% with significant differences (p≤0.05). The age groups (1-9) years recorded the highest rates 55.4% and the lowest rate 13.6% in the age group (40-49) years. The highest rate of infection was 62.5% during the month of June, while the month of October was the lowest rate 5% and significant differences. The incidence rate in rural areas was 50.6% higher than in the urban areas 32.5%. The study also included the effect of Teucrium polium L. on the parasite in the culture media HSP-1, the concentrations of 0.5-3 mg / mL significantly affected Giardia, it was noted whenever the greater the concentration, the greater the effect during different treatment periods (1-4) days, as the highest concentration 3 mg/ml killed all Giardia parasites on the fourth day of treatment.

MICROSCOPIC AND MOLECULAR DIAGNOSIS OF Ascaridia spp. IN DOMESTIC PIGEONS(Columba livia domestica) IN BAGHDAD CITY,IRAQ

2020 ◽  
Vol 51 (4) ◽  
pp. 1220-1225
Author(s):  
Faraj & Al- Amery
Keyword(s):  
Molecular Diagnosis ◽  
Columba Livia ◽  
Ascaridia Galli ◽  
Molecular Assay ◽  
Infection Rates ◽  
Conventional Pcr ◽  
Significant Difference ◽  
Pcr Products ◽  
Males And Females ◽  
Domestic Pigeons

Ascaridiosis is a very important parasitic disease of birds, it is caused by Ascaridia. This study was conducted to identify the Ascaridia species by microscopic and molecular assay in Baghdad city. One hundred and sixty fecal samples were collected from domestic pigeons during the period from 1/1/ 2019 to 31/3/ 2019.  Results showed that the rate of infection for Ascaridia spp. 15.62% by microscopic examination.  Significant difference was observed in infection rates between males and females pigeons. Fifty samples randomly selected and subjected to molecular diagnosis of Ascaridia  spp.. Molecular examination results, the total infection rate showed 16%(8/50). The eight  positive PCR products were sequenced and deposited in Gene bank data base, phylogenic analysis demonstrated that 4 sequences belongs to Ascaridia galli ( MK918635.1, MK918636.1, MK918847.1, MK919081.1), while 2 (MK919199.1, MK919200.1) belong to  Ascaridia nymphii and 2 (MK919207.1, MK919264.1)  belong to Ascaridia numidae. It is the first study in Iraq to diagnosis of  Ascaridia nymphii and Ascaridia numidae  in domesticed pigeons by using conventional PCR.

scholarly journals Impact of Subclinical Haemoproteus columbae Infection on Farmed Domestic Pigeons from Central Java (Yogyakarta), Indonesia, with Special Reference to Changes in the Hemogram

Pathogens ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 440
Author(s):  
Imron Rosyadi ◽  
Siti Isrina Oktavia Salasia ◽  
Bayanzul Argamjav ◽  
Hiroshi Sato
Keyword(s):  
Chronic Phase ◽  
Hypochromic Anemia ◽  
Hemoglobin Concentration ◽  
Columba Livia ◽  
Nucleotide Sequencing ◽  
Mean Corpuscular Hemoglobin ◽  
Haemoproteus Columbae ◽  
Central Java ◽  
Mitochondrial Cytochrome B ◽  
Domestic Pigeons

Pigeon haemoproteosis caused by Haemoproteus columbae (Apicomplexa: Haemosporida: Haemoproteidae) is globally prevalent in rock doves (Columba livia), although little is known regarding this disease in pigeons and doves in Indonesia. Blood samples of 35 farmed domestic pigeons (C. livia f. domestica) from four localities in Yogyakarta Special Region, Central Java, Indonesia, were collected from March to June, 2016, subjected to a hemogram, and analyzed for the presence of hemoprotozoan infections. Microscopic examination of blood smears revealed a prevalence of 62.5–100% of H. columbae at the four localities (n = 8–10 for each locality), and geometric means of 3.0–5.6% of erythrocytes were parasitized by young and mature gametocytes, suggesting that all infected pigeons were in the chronic phase of infection with repeated recurrences and/or reinfections. Nucleotide sequencing of mitochondrial cytochrome b gene (cytb) for haemosporidian species demonstrated the distribution of four major cytb lineages of H. columbae (mainly HAECOL1, accompanied by COLIV03, COQUI05, and CXNEA02 according to the MalAvi database). Hemogram analysis, involving the estimation of packed cell volume, erythrocyte counts, mean corpuscular volume, mean corpuscular hemoglobin concentration, and plasma protein and fibrinogen levels of 20 parasitized pigeons and five non-infected pigeons demonstrated significant macrocytic hypochromic anemia with hypoproteinemia and hyperfibrinogenemia in the infected pigeons. This study shows the profound impact of long-lasting subclinical pigeon haemoproteosis caused by H. columbae on the health of farmed domestic pigeons.

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