Emma Chen

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• 2201 Walnut Ave # 290, Fremont, CA 94536美国 at Consulting Agency

Background: There has been a growing interest in better understanding the association between water, sanitation, and hygiene (WASH) and malnutrition. Aim: We analysed anthropometric data of children attending WASH intervention schools and those from non-intervention schools in Ogun State, Nigeria. Methods: A total of 353 children across six sc...

The sibling species composition of Simulium damnosum sensulato and abundance of these sibling species in two communities (Opeji and Imala-Odo) of Ogun State south-western Nigeria was carried out in the wet months (May to October). Morphological identification of black flies using standard protocol was done from 07:00hr-18:00hr twice every two weeks...

Parasites are a global health problem that endanger the total well-being of humans and animals. This survey was conducted to assess parasites in faecal samples sourced from two open markets (Olabisi Onabanjo Market and Oke-Aje Market) in Ijebu-Ode, Ijebu-Ode Local Government Area, Ogun State, Southwestern Nigeria. A total of 121 samples were obtain...

The level of knowledge possessed by community members determines the role it plays in preventing Neglected Tropical Diseases (NTDs) within the population. Our cross-sectional study assessed the knowledge, attitude and practices (KAP) towards Lymphatic Filariasis (LF) across three communities located in Ose Local Government Area (LGA) Ondo State, So...

Open defecation and indiscriminate disposal of waste is a common practice and has been highlighted as a risk factor promoting transmission of gastrointestinal parasites hence, we investigated the prevalence of parasites in Houseflies (Musca domestica) and soil samples from garbage dumps in Ijebu-North, Ogun State, Nigeria, where such data is non-ex...

Knowledge and implications of atrazine in waters from rural areas in Nigeria remain diminutive. Meanwhile, recent findings have shown presence of atrazine residue in water bodies. Atrazine level in six communities (Mamu, Oru, Ilaporu, Awa, Ijebu Igbo, and Ago-Iwoye) of Ijebu North local government, Ogun State, Nigeria using 69 hand-dug wells (HDWs)...

Keywords: Enrichment of environmental conditions of laboratory mice model in most studies may be attributed to quantity and quality of data output. Despite reports on welfare of (albino mice), there is dearth of studies in comparing standard breeding of this specie in enriched group (EG) and Un-enriched group (UG). The study examined productivity b...

There is an increasing overdependence and use of atrazine herbicide for the control of pre-and post-emergence broad leaf weeds on maize farms in rural agricultural communities in Nigeria. We carried out a survey of atrazine residue in 69 hand-dug wells (HDW), 40 boreholes (BH) and 4 streams from all the 6 communities (Awa, Mamu, Ijebu-Igbo, Ago-Iwo...

No recognized study has been conducted in rural agricultural areas in Nigeria to monitor atrazine in drinking water and its potential health implications. Here, a total of 69 hand-dug wells (HDW), 40 boreholes (BH), and 4 streams were collected from the six (6) communities in Ijebu-North Local Government Area, Southwest Nigeria and analyzed for atr...

Sleeping under insecticidal treated bed-nets has been proven as an effective tool towards preventing mosquito bites and malaria but the burden of malaria cases seems to be on the increase. This study therefore assessed the limiting factors associated with ownership and usage of Long-Lasting Insecticidal Nets (LLINs) in four periurban communities in...

There are no available data on the level of atrazine in drinking water from rural agricultural areas in Nigeria and its potential health implications. Here, we measured atrazine residue in 69 hand-dug wells (HDW), 40 boreholes (BH), and four major streams from the six communities (Ago-Iwoye, Ijebu-Igbo, Oru, Awa, Ilaporu, and Mamu) in Ijebu North L...

No recognised study has been conducted to monitor atrazine residue in drinking water from rural agricultural areas in Nigeria and its potential health implications. In this ecotoxicological study, we monitored atrazine residue in 69 hand-dug wells (HDW), 40 boreholes (BH) and 4 major streams from all the 6 communities (Ago-Iwoye, Ijebu-Igbo, Oru, A...

No recognised study has been conducted to monitor atrazine residue in drinking water from rural agricultural areas in Nigeria and its potential health implications. In this ecotoxicological study, we monitored atrazine residue in 69 hand-dug wells (HDW), 40 boreholes (BH) and 4 major streams from all the 6 communities (Ago-Iwoye, Ijebu-Igbo, Oru, A...

Enrichment of laboratory rats' model in scientific research has severe consequences on their productivity and quality of the data output. Despite several reports on the welfare of Rattus norvegicus (albino rats), very few studies have considered comparing standard breeding of this species in enriched group (EG) and Un-enriched group (UG). This stud...

Vegetables contain essential nutrients that enhance the growth and vital health of humans but can also harbour a wide range of microbial contaminants. This research aims at identifying bacteria and parasites contaminants in vegetables retail in Ijebu metropolis of Ogun State. Ten different unprocessed vegetables were purchased in the fresh state fr...

Soil transmitted helminth (STH) infections are among the most common human infections worldwide with over 1 billion people affected. Many estimates of STH infection are often based on school-aged children (SAC). This study produced predictive risk-maps of STH on a more finite scale, estimated the number of people infected, and the amount of drug re...

Background There has been a growing interest in better understanding and measuring the effect of water, sanitation and hygiene (WASH) on nutritional outcomes. In this study, we evaluated the nutritional status of children attending schools benefitting from UNICEF’s assisted WASH programming in Ogun State, Southwest Nigeria Methods A total of 175 c...

This cross-sectional study was conducted to assess the prevalence of ectoparasites amongst household dogs in Sagamu, Ogun State. Ectoparasites were carefully collected from parts of each dog's body by combing and scraping the skin and were morphologically identified using dichotomous keys with the aid of a hand lens and microscope. Also, structured...

Background: Infections arising from the consumption of parasite-contaminated vegetables are a major concern in public health. This study assessed the parasitic contamination of vegetables sold across open markets in Ekiti, Nigeria Methods: A total of 88 samples of 6 different vegetables: African spinach (A maranthus hybridus), pumpkin (Telfairia o...

The pandemic of new corona virus disease in 2019 (COVID-19) in over 200 countries across all the continents has resulted in a major health hazard and consequently, drawn global attention worldwide. Apart from the health implications associated with the infestation of COVID-19, the socioeconomic impact of the pandemic cannot be overemphasized. Altho...

This study reports the status of onchocerciasis and lymphatic filariasis (LF) in communities with low endemicity in Ogun-State, Nigeria. The Ov16/Wb123 biplex Rapid Diagnostic Test was used to screen 1,836 participants aged 5 years and above from 8 Local Government Areas (LGAs) from October to December, 2016. Skin snips and night blood were also us...

Soil Transmitted Helminths (STHs) are Neglected Tropical Diseases of global public health importance. This study evaluated the efficacy of albendazole (ALB) amongst primary school children aged 6 – 16 years in STH-endemic communities in Ogun State, Nigeria. Demographic characteristics were obtained and stool samples were collected and analysed by K...

National lymphatic filariasis elimination programme (NLFEP) of Federal Ministry of Health sets to provide status of LF in the country before 2020. Borno State, situated in the North East political zone of Nigeria with an estimated population of 4.1million had been enmeshed in insurgency for over a decade. Following an initial mapping between 2008 a...

Trichomoniasis is one of the most prevalent sexually transmitted infections (STIs) in Africa. This cross-sectional study investigated the prevalence of trichomoniasis and its associated risk factors in Ijebu-North Local Government Area, Ogun State Southwest Nigeria. High vaginal swabs were collected from 172 female participants between October and...

The spiralling whitefly, Aleurodicus dispersus Russell (Hemiptera: Aleyrodidae), has a wide range of anatomy, physiology, behaviour, and ecology depending on the host plant. This research looked at the genetic variations between A. dispersus populations on two separate host plants (Citrus aurantifolia and Ocimum gratissimum). The existence of host-...

Background: Soil transmitted helminth (STH) infections are among the most common human infections worldwide with over 1 billion people affected. Many estimates of STH infection are often based on school-aged children (SAC). This study produced predictive risk-maps of STH on a more finite scale, estimated the number of people infected, and the amoun...

Mosquitoes are known to transmit lymphatic filariasis (LF) which causes varying disease conditions in humans. This study assessed indoor mosquitoes and their parity status in some communities of Ose Local Government Area, Ondo State, Nigeria. Endophilic mosquitoes were collected from 122 consented participants' houses of various building structures...

Gastrointestinal parasites are known to cause loss of appetite, anemia, poor growth and diarrhea among infected livestock and pets. In addition, there are concerns about the effect of domestication on transmission of zoonotic infections. However, there is paucity of information on the prevalence of gastrointestinal parasites among domestic animals...

Gastrointestinal parasites are known to cause loss of appetite, anemia, poor growth and diarrhea among infected livestock and pets. In addition, there are concerns about the effect of domestication on transmission of zoonotic infections. However, there is paucity of information on the prevalence of gastrointestinal parasites among domestic animals...

The knowledge of length-weight relationship parameters has numerous practical applications in fishery research and management. Currently, there is a dearth of information on the growth pattern and state of well-being of Parachanna africana in Ijede and Agbowa Lagoons. This study period was between December 2017, and June 2018 investigated the allom...

Honeybee Apis mellifera adansonii, dominant honey producing species in Nigeria was subjected to genetic variability studies using Simple Sequence Repeat (SSR) in other to provide the baseline data in Nigeria. Nine (9) Simple Sequence Repeats (SSR) primers were used to assess the genetic diversity in Two (2) worker bees each collected from 22 coloni...

This study assessed the efficacy and safety of albendazole (ALB) amongst soil-transmitted helminth (STH) infected school aged children (SAC) cross-section ally in Odeda Local Government Area (LGA), Ogun State, Nigeria. Consented 485 pupils between the ages of 5-16 years were examined for STH infections using the Kato-katz technique at baseline. All...

A Community-based cross-sectional study was conducted in Ijebu North Local Government Area (LGA) of Ogun State, Nigeria to assess the level of community awareness towards malaria vector and its control. This study was conducted from the month of March to July, 2017. 500 copies of well-structured questionnaires were distributed within 6 randomly pic...

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Wormcasts produced by three earthworm species (Alma millsoni, Eudrilus eugeniae and Libyodrilus violaceus) exposed to a glyphosate-based herbicide reduce growth, fruit yield and quality of tomato (Lycopersicon esculentum)

It remains unknown if casts produced by earthworms exposed to a glyphosate-based herbicide (GBH) will retain their agricultural benefit. This study investigated the agricultural importance of surface casts produced by three earthworm species (Alma millsoni, Eudrilus eugeniae and Libyodrilus violaceus) exposed to a GBH on growth, fruit yield and qua...

Background: This serological study conducted between March and July 2015 investigated the status of onchocerciasis in Ogun State, Nigeria after a decade of mass drug administration (MDA) with ivermectin. Baseline information from the rapid epidemiological mapping of onchocerciasis (REMO) prior to MDA had indicated that Ogun State was meso-endemic t...

Background: This study reports knowledge of onchocerciasis and surrounding factors from the perspective of community members, Community drug distributors and health workers in eight endemic LGAs of Ogun State, Nigeria. Methods: Using structured questionnaires and Focus Group Discussion, a total of 417 community members, 37 health workers and 42 CDD...

Background: This serological study conducted between March and July 2015 investigated the status of onchocerciasis in Ogun State, Nigeria after a decade of mass drug administration (MDA) with ivermectin. Baseline information from the rapid epidemiological mapping of onchocerciasis (REMO) prior to MDA had indicated that Ogun State was meso-endemic t...

Lymphatic filariasis (LF) is one of the neglected tropical diseases endemic in Nigeria. Epidemiological studies were conducted to determine the prevalence, distribution and clinical signs of the disease in three communities of Ose LGA, Ondo State from October 2014 to January 2015. One thousand and ninety consented participants enrolled for the stud...

A cytotaxonomic study was carried out to determine the species composition and dynamics of Simulium damnosum sensu lato in Oyan River, an onchocerciasis mesoendemic area in southwest Nigeria. Simulium larvae were collected fortnightly from different attachments between March and November 2012 fixed in Carnoy's solution for laboratory identification...

This study reports the ecological and attachment profile of Simulium damnosun sl larvae, water physico-chemical parameters and in-situ plants associated with larvae breeding along Ogun River systems, Ogun State from March to November 2012. A line transect 50m × 50m vegetation plot measured at the four cardinal points of the breeding sites was used...

Malaria in Nigeria is treated blindly in most cases and where diagnostic measures exist, efficacies of several are still in doubt. This study evaluated performance of microscopy and rapid (RDT) methods in confirming prevalence of malaria parasites (MP),parasite species and percent parasitized red blood cells in 384 persons systematically selected f...

Malaria caused by Plasmodium species is often observed in areas where malaria is endemic. Malaria prevalence in metropolitan Abeokuta of Ogun State, Nigeria was studied between October, 2012 and January 2013. Oral interviews were used to get personal data of participants. Blood samples were obtained from 384 consented participants from the seven pr...