Molecular Characterization and Risk Factors ofGiardia duodenalisamong School Children from La Habana, Cuba

Giardia duodenalisis considered the most common protozoan infecting humans worldwide. Molecular characterization ofG. duodenalisisolates has revealed the existence of eight groups (assemblages A to H) which differ in their host distribution. A cross-sectional study was conducted in 639 children from La Habana between January and December 2013. Two assemblage-specific PCRs were carried out for the molecular characterization. The overall prevalence ofGiardiainfection was 11.9%. DNA from 63 of 76 (82.9%) samples was successfully amplified by PCR-tpi, while 58 from 76 (76.3%) were detected by PCRE1-HF. Similar results by both PCRs were obtained in 54 from 76 samples (71%). According to these analyses, assemblage B and mixed assemblages A + B account for most of theGiardiainfections in the cohort of children tested. Our current study identified assemblage B as predominant genotype in children infected withGiardia. Univariate analysis indicated that omission of washing hands before eating and keeping dogs at home were significant risk factors for aGiardiainfection. In the future, novel molecular tools for a better discrimination of assemblages at the subassemblages level are needed to verify possible correlations betweenGiardiagenotypes and symptomatology of giardiasis.

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Risk Factors for Infection with Soil Transmitted Helminths, Cryptosporidium spp., and Giardia duodenalis in Children Enrolled in Preschools in Kafue District, Zambia

Epidemiology Research International ◽

10.1155/2015/906520 ◽

2015 ◽

Vol 2015 ◽

pp. 1-7 ◽

Cited By ~ 3

Author(s):

Joyce Siwila ◽

Annette Olsen

Keyword(s):

Risk Factors ◽

Longitudinal Study ◽

Significant Risk ◽

Giardia Duodenalis ◽

Significant Risk Factor ◽

Cross Sectional Study ◽

Parasitic Infections ◽

Cross Sectional ◽

Low Socioeconomic ◽

Soil Transmitted Helminths

Intestinal parasitic infections are common among children worldwide. This study was aimed at determining risk factors for infection with soil transmitted helminths, Cryptosporidium spp., and Giardia duodenalis, among children in preschools. The study was in two parts: a cross-sectional study in which data were collected from 403 children from 10 preschools and a longitudinal study in which 100 children from four preschools from the previous 10 were selected. Prevalence of Ascaris lumbricoides was 12.0%, while that of hookworm was 8.3%. Overall prevalence of Cryptosporidium and G. duodenalis was 28.0% and 29.0%, respectively. Low education level of parent/guardian was a significant risk factor for A. lumbricoides (OR = 2.35, 95% CI: 1.02–5.41; P=0.04), while roofing types other than corrugated iron sheets were found to be protective for G. duodenalis infection in both bivariate and multivariate analyses (multivariate: OR = 0.67, 95% CI: 0.45–0.99; P=0.04). Low socioeconomic level was found to be protective for Cryptosporidium spp. infection in multivariate analysis (OR = 0.59, 95% CI: 0.35–0.99; P=0.04). In the longitudinal study, none of the factors were associated with either infection. These findings may have implications for other preschools in other districts in Zambia.

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Risk factors for infection with Giardia duodenalis in pre-school children in the city of Salvador, Brazil

Epidemiology and Infection ◽

10.1017/s0950268803001018 ◽

2003 ◽

Vol 131 (2) ◽

pp. 899-906 ◽

Cited By ~ 39

Author(s):

M. S. PRADO ◽

A. STRINA ◽

M. L. BARRETO ◽

ANA MARLÚCIA OLIVEIRA-ASSIS ◽

LÍVIA MARIA PAZ ◽

...

Keyword(s):

Risk Factors ◽

Significant Risk ◽

Giardia Duodenalis ◽

Cross Sectional Study ◽

Sectional Study ◽

Cross Sectional ◽

Number Of Children ◽

Hygiene Behaviour ◽

House Construction ◽

The City

A cross-sectional study of 694 children aged 2 to 45 months selected from 30 clusters throughout the city of Salvador, Bahia (pop. 2·3 million) was carried out as part of a longitudinal study of diarrhoea in order to identify risk factors for infection with Giardia duodenalis. Variables studied included three social and demographic factors (such as mother's education and marital status), five relating to the peri-domestic environment (rubbish disposal, open sewers, paving of the street), seven relating to the home itself (house construction, susceptibility to flooding, water supply and sanitation) as well as a score for hygiene behaviour based on structured observation. After multivariate analysis using a hierarchical model, only four significant risk factors were found: (a) number of children in the household under five years (b) rubbish not collected from the house (c) presence of visible sewage nearby, and (d) absence of a toilet. All four were significant at the 1% level.

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Prevalence and Molecular Characterization of Giardia duodenalis Assemblage D of Dogs in Egypt, and Its Zoonotic Implication

Microbes, Infection and Chemotherapy ◽

10.54034/mic.e1268 ◽

2021 ◽

Vol 1 ◽

pp. e1268

Author(s):

Amer R. Abdel Aziz ◽

Shimaa S.G. Sorour

Keyword(s):

Molecular Characterization ◽

Prevalence Rate ◽

Giardia Duodenalis ◽

Cross Sectional Study ◽

Giardia Infection ◽

Cross Sectional ◽

Household Environment ◽

Canned Meat ◽

Undercooked Meat

Background, Methods: To elucidate the prevalence and molecular characterization of Giardia infection in dogs, a cross-sectional study was performed on stray and housed dogs from different localities of Egypt. Results: A total of 986 fecal specimens were collected from dogs. The overall infection rate was 8.5%. The diarrheic dogs revealed higher prevalence of 14.43% than asymptomatic animals. The infection was more prevalent in younger dogs ( < 6 months) (9.5%) compared to older animals. Higher prevalence of infection was observed during the cold winter months (11.24%). The community owned dogs (stray dogs in the street) showed (11.75%) higher prevalence rate than pet dogs in the household environment (5.59%). Moreover, it was found that dogs fed on undercooked meat, and offal's were showing higher prevalence of giardiasis than dogs fed on canned meat. On the other hand, dogs subjected to regular grooming and good hygienic practices had lesser prevalence rate of the infection compared to unclean neglected dogs. Conclusions: The sequencing and phylogenetic analysis of the amplicons of 18SrRNA gene of G. duodenalis revealed that; they were closer to assemblage D necessitating urgent attention due to their zoonotic importance.

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Salmonella Carriage among Patients in Fako Division, Cameroon: A Cross-sectional Study of Its Prevalence and Associated Risk Factors

Journal of Advances in Microbiology ◽

10.9734/jamb/2019/v16i230121 ◽

2019 ◽

pp. 1-9

Author(s):

Awung Nkeza ◽

Njunda Longdoh Anna ◽

Assob Nguedia Jules Clement

Keyword(s):

Risk Factors ◽

Salmonella Enterica ◽

Tap Water ◽

Medical Center ◽

Univariate Analysis ◽

Significant Risk ◽

Cross Sectional Study ◽

Sectional Study ◽

Cross Sectional ◽

Environmental Interventions

Introduction: This study was aimed at evaluating the prevalence and the risk factors of Salmonellosis in patients who were consulted in some medical facilities in Fako Division of Cameroon. Methods: A cross-sectional study was carried out from November 2017 to November 2018 in three hospitals in Fako division of Cameroon; Tiko District Hospital, Mutengene Medical Center and Buea Regional Hospital. A total of 510 individuals presenting with symptoms of Salmonellosis were administered comprehensive questionnaire. Salmonella enterica strains were cultured from stool and identified using API 20E. Data was entered into Excel and imported into STATA v.12 for Windows, for statistical analysis. Odd ratios were calculated to determine the risk factors associated with Salmonellosis. Results: Fifty Salmonella enterica strains were isolated giving a prevalence of 9.8%. Univariate analysis showed the following risk factors for Salmonellosis: area of residence; suburban p=0.037, OR=5.7 95% CI (1.1-30.03) and rural p=0.077, OR=2.3 95% CI (0.91-5.76), overcrowding (2 persons in a room) p=0.047, OR=2.3 95% CI (1.01-5.41); drinking tap-water, p=0.032 OR=0.38(.16-.092); left-over drugs from the pharmacy, p=0.906 OR= 1.07(0.32-3.55) as being relatively significant risk factors. Conclusion: The prevalence was found to be higher among the very young and older people greater than 45 years. The risk factors identified in this study are: age, area of residence; overcrowding; consuming locally prepared yoghurt or Kosam; eating out or auto-medication by taking leftover drugs. These findings highlight the need of reinforcement of hygiene promotion especially in infants and overpopulated communities, educate on proper prescription and usage of drugs, in addition to the intensification of environmental interventions.

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Molecular Characterization of Giardia duodenalis in Children and Adults Sampled in Algeria

Microorganisms ◽

10.3390/microorganisms9010054 ◽

2020 ◽

Vol 9 (1) ◽

pp. 54

Author(s):

Salem Belkessa ◽

Daniel Thomas-Lopez ◽

Karim Houali ◽

Farida Ghalmi ◽

Christen Rune Stensvold

Keyword(s):

Real Time ◽

Molecular Characterization ◽

Real Time Pcr ◽

Intestinal Parasites ◽

Giardia Duodenalis ◽

Specific Pcr ◽

Stool Samples ◽

Pcr Targeting ◽

Assemblage B

The molecular epidemiology of giardiasis in Africa remains unclear. A study was carried out across four hospitals in Algeria. A total of 119 fecal samples from 55 children, 37 adults, and 27 individuals of undetermined age, all scored positive for intestinal parasites by microscopy, and were screened by real-time PCR for Giardia. Molecular characterization of Giardia was performed by assemblage-specific PCR and PCR targeting the triose phosphate isomerase gene (tpi). Of the 119 samples, 80 (67%) were Giardia-positive by real-time PCR. For 48 moderately-highly real-time PCR-positive samples, tpi genotyping assigned 22 samples to Assemblage A and 26 to Assemblage B. Contrary to Assemblage A, Assemblage B exhibited substantial genetic diversity and allelic heterozygosity. Assemblage-specific PCR proved to be specific for discriminating Assemblage A or B but not as sensitive as tpi genotyping. We confirmed that real-time PCR is more sensitive than microscopy for detecting Giardia in stool samples and that robust amplification and sequencing of the tpi gene is feasible when moderate-to-strongly real-time PCR-positive samples are used. This study is one of the few performed in Africa providing genotyping data on Giardia infections in humans. Both assemblages A and B were commonly seen and not associated with specific sociodemographic data.

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Prevalence, Risk Factors, and Antibiogram of Bacteria Isolated from Milk of Goats with Subclinical Mastitis in Thika East Subcounty, Kenya

Journal of Veterinary Medicine ◽

10.1155/2018/3801479 ◽

2018 ◽

Vol 2018 ◽

pp. 1-8 ◽

Cited By ~ 4

Author(s):

Precious Mahlangu ◽

Naomi Maina ◽

John Kagira

Keyword(s):

Risk Factors ◽

Significant Risk ◽

Antibiotic Sensitivity ◽

Subclinical Mastitis ◽

Cross Sectional Study ◽

Penicillin G ◽

Dairy Goats ◽

Cross Sectional ◽

California Mastitis Test ◽

Staphylococcus Intermedius

A cross-sectional study was carried out to determine the prevalence and risk factors of subclinical mastitis in dairy goats in Thika East Subcounty, Kenya. Further the bacterial pathogens and their antibiogram were investigated. Farm level data on risk factors were obtained from 41 farmers using questionnaires. Milk was obtained from 110 lactating dairy goats and tested for submastitis using California Mastitis Test (CMT). The prevalence of subclinical mastitis at goat level was estimated to be at 50.9% using CMT, out of which 86.5% yielded bacteria on culture. The significant risk factors associated with the occurrence of subclinical mastitis were cleaning schedule (p=0.022, OD=1.047) and parity of the goat (p=0048, OD=1.37). Higher prevalence of subclinical mastitis was observed for goats residing in houses cleaned at least once a fortnight. Does in the first parity were least affected. 169 bacterial isolates were obtained from culture, of which 52 isolates from major classes of isolated bacteria were tested for antibiotic sensitivity to six antibiotics. Fourteen different bacteria were isolated and identified from the milk samples. Coagulase-negative Staphylococci (20.7%), Serratia spp. (19.5%), Citrobacter spp. (16%), Klebsiella spp. (11%), Staphylococcus aureus (10.7%), Enterobacter spp. (6.5%), Escherichia coli (5.9%), Proteus spp. (3%), Corynebacterium spp. (1.8%), Morganella spp. (1.8%), Streptococcus spp. (1.2%), Providencia spp. (0.6%), Micrococcus spp. (0.6%), and Staphylococcus intermedius (0.6%) were isolated and identified from the samples. All the isolates were resistant to Penicillin G, while 98% of the isolates were sensitive to Streptomycin. In conclusion, the study showed that a large proportion of goats were affected by subclinical mastitis, with the main bacteria being Staphylococci spp. and coliforms, and that most of the tested antibiotics can be used in the treatment of mastitis. Farmers need to be trained on improved control of mastitis through adoption of good dairy husbandry and milking practices.

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A study on prevalence of chronic kidney disease and its risk factors among adults in selected slums of Chennai

International Journal of Community Medicine and Public Health ◽

10.18203/2394-6040.ijcmph20190059 ◽

2019 ◽

Vol 6 (2) ◽

pp. 504

Author(s):

K. Kokila ◽

K. Chellavel Ganapathi

Keyword(s):

Risk Factors ◽

Chronic Kidney Disease ◽

Kidney Disease ◽

Significant Risk ◽

Significant Risk Factor ◽

Cross Sectional Study ◽

Uncontrolled Hypertension ◽

Adult Males ◽

Cross Sectional ◽

Slum Population

Background: Chronic kidney disease (CKD) is a silent epidemic. The true prevalence of CKD with in a population are very difficult to estimate, since early to moderate CKD were usually asymptomatic. ESRD in the consequence of CKD is one of the most expensive diseases to treat.Only way is to prevent it and Hence this was conducted to estimate the prevalence of CKD and its associated risk factors among adults in selected slums of Chennai.Methods: This is a cross sectional study done from May 2013 to June 2014 in selected slums of Chennai. The study population includes adult males and females. Multi stage sampling method used. Sample size covered was 400. A semi structured questionnaire used as tool. Based on the serum creatinine eGFR calculated using modified MDRD study equation and CKD prevalence was identified. The data was entered in MS excel and analyzed using SPSS version 21.Results: Total of 400 participants involved. Females were predominant in the study. Among them, 67 (16.8%) were diagnosed as CKD patients and Stage 1, 4.0% had stage 2, 3.6% had stage 3, 1.3% had stage 4 and 0.5% had stage 5 at the time of diagnosis.Conclusions: This study revealed prevalence of CKD among slum population was 16.8%. This study showed that old age, uncontrolled hypertension, uneducated, Diabetes with poor control, overuse of analgesics, H/o smoking, obesity, alcoholism, passive smoking, family H/o CKD and proteinuria were significant risk factor for CKD among study subjects. Slum population with risk factors should be regularly screened for CKD.

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Socioeconomic, Psychiatric and Materiality Determinants and Risk of Postpartum Depression in Border City of Ilam, Western Iran

Depression Research and Treatment ◽

10.1155/2013/653471 ◽

2013 ◽

Vol 2013 ◽

pp. 1-7 ◽

Cited By ~ 8

Author(s):

Pegah Taherifard ◽

Ali Delpisheh ◽

Ramin Shirali ◽

Abdorrahim Afkhamzadeh ◽

Yousef Veisani

Keyword(s):

Risk Factors ◽

Postpartum Depression ◽

Low Socioeconomic Status ◽

Data Gathering ◽

Significant Risk ◽

Cross Sectional Study ◽

Cross Sectional ◽

Western Iran ◽

Border City ◽

Significant Difference

Background. Postpartum depression (PPD) is considered as one of the mood disturbances occurring during 2-3 months after delivery. The present study aimed to determine the prevalence of PPD and its associated risk factors in border city of Ilam, western Iran.Methods. Through a descriptive cross-sectional study in 2011, overall, 197 women who attended Obstetrics & Gynecology clinics postpartumly in the border city of Ilam, western Iran, were randomly recruited. A standard questionnaire that was completed by a trained midwife through face to face interviews was used for data gathering.Results. Mean age ± standard deviations was 27.9 ± 5.2 years. Prevalence of PPD was estimated to be 34.8% (95% CI: 27.7–41.7). A significant difference was observed among depression scores before and after delivery (P≤0.001). Type of delivery (P=0.044), low socioeconomic status (P=0.011), and women having low educational level (P=0.009) were the most important significant risk factors associated with PPD. The regression analysis showed that employed mothers compared to housekeepers were more at risk for PPD (adjusted OR = 2.01, 95% CI: 1.22–2.28,P=0.003).Conclusions. Prevalence of PPD in western Iran was slightly higher than the corresponding rate from either national or international reports.

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Frequency and risk factors of internet addiction in medical students: a cross-sectional study

Journal of the Pakistan Medical Association ◽

10.47391/jpma.451 ◽

2021 ◽

pp. 1-11

Author(s):

Amina Ehsan ◽

Farwa Iqbal ◽

Muhammad Azeem Rao

Keyword(s):

Risk Factors ◽

Medical Students ◽

Internet Addiction ◽

Significant Risk ◽

Sampling Technique ◽

Total Sample ◽

Cross Sectional Study ◽

Sectional Study ◽

Online Relationships ◽

Cross Sectional

Abstract Objectives: The objectives of the study were to find out the prevalence of internet addiction and to determine the risk factors associated with internet addiction in medical students. Methods: This descriptive cross-sectional study was carried out at Rawalpindi Medical University, Rawalpindi from July 2018 to August 2019. Our study population included medical students from all the years of MBBS aged 18-25 years, who have been using the internet for the past two years or more. A Stratified random sampling technique was used. Seventy-six self-administered questionnaires were distributed in each year. Data was entered and analyzed using the Statistical Package for Social Sciences (SPSS version 25). Results: Out of the total sample of 380, the prevalence came out to be 90% (n=342). Two hundred and twenty-two 222 (58.4%) had mild, 115 (30.3%) had moderate, six (1.6%) had severe and 37 (9.7%) had no addiction. Out of the risk factors online friendships (p= 0.007), online relationships (P=0.035), online chatting (p= 0.009), online shopping (p= 0.009), online games (p=0.023) and online series/movies (p< 0.000) were statistically significant. Conclusion: The prevalence of internet addiction is high among medical students, which is mostly of a mild type. Internet addiction is more common in males and non-hostel residents. Other significant risk factors are online relationships, online gaming, and online series/movies. Keywords: Prevalence, internet, medical students, risk factors. Continuous...

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Characteristics and risk factors of Plasmodium falciparum malaria in Eastern and Central Nepal

Kathmandu University Medical Journal ◽

10.3126/kumj.v7i4.2758 ◽

1970 ◽

Vol 7 (4) ◽

pp. 378-382 ◽

Cited By ~ 3

Author(s):

MR Banjara ◽

W Sirawaraporn ◽

S Petmitr ◽

M Imwong ◽

AB Joshi ◽

...

Keyword(s):

Risk Factors ◽

Falciparum Malaria ◽

Central Region ◽

Significant Risk ◽

Cross Sectional Study ◽

Eastern Region ◽

Limited Information ◽

Laboratory Assessment ◽

Cross Sectional ◽

Central Nepal

Background: Very limited information is available on epidemiology of falciparum malaria in Nepal. Such information is very important for malaria control programmes. It is believed that malaria in Eastern region is imported from border districts of India and local transmission follows whereas it is indigenous in Central region. Therefore, the characteristics and risk factors of malaria are believed to be different in Eastern and Central Nepal. Objective: The objective of the study is to describe and compare the characteristics and risk factors of falciparum malaria in Eastern and Central Nepal. Materials and methods: This cross-sectional study was conducted in falciparum malaria endemic districts of Eastern and Central Nepal, during the period 2007 to 2008. We identified and collected information from 106 patients (62 from Eastern and 44 from Central region). Patient examination, clinical and laboratory assessment were done and patients were interviewed using structured questionnaire for malaria related characteristics, risk factors and behaviours. Results: There were significant differences in risk factors and characteristics of falciparum malaria in the Central than the Eastern region. In the Central region, male, illiteracy and thatched roof hut were significant risk factors of falciparum malaria patients as compared to the Eastern region. Visits outside within one months, previous malaria within three months, taking antimalarial before confirmatory diagnosis were significantly higher in patients of the Eastern region as compared to the Central region. Conclusion: Falciparum malaria in Nepal should not be seen as similar entity, and different strategies for prevention and control is needed for its diverse characteristics and endemicity. Key words: Eastern and Central Nepal; falciparum malaria; risk factors DOI: 10.3126/kumj.v7i4.2758 Kathmandu University Medical Journal (2009) Vol.7, No.4 Issue 28, 378-382

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