Williams Walana

Dr. Williams Walana

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Research Focus & Metrics

Academic Career Length

15Years (2012-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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3 January 2017 in BMC Research Notes
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Journal Article
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STSamuel Crowther Kofi Tay
Samuel Crowther Kofi Tay
ENEmmanuel Agbeko Nani
Emmanuel Agbeko Nani
WWWilliams Walana
Williams Walana
Parasitic infections are of public health concern globally, particular among at risk groups such as pregnant women in developing countries. The presence of these parasites during pregnancy potentiate adverse effects to both the mother and the unborn baby. This study sought to establish the prevalence of some parasitic agents among antenatal attendees in the Dangme East District of Ghana. A cross-sectional prospective study was conduct between April and July, 2012. Venous blood specimens were collected from each participant for haemoglobin estimation and malaria microscopy. In addition participants’ early morning mid-stream urine and stool specimens were analyzed microscopically for parasitic agents. A total of 375 pregnant women were involved in the study, of which anaemia was present in 66.4% (249/375). However, parasitic infections associated anaemia prevalence was 49.6% (186/375). In all, 186 cases of parasitic infections were observed; 171 (44.0%) were single isolated infections while 15 (4.0%) were co-infections. Plasmodium species were significantly associated with anaemia (13.3%, χ2 = 23.290, p < 0.001). Also, the presence of Schistosoma haematobium (3.7%, χ2 = 7.267, p = 0.008), Schistosoma mansoni (5.3%, χ2 = 5.414, p = 0.023) and hookworm (3.7%, χ2 = 11.267, p = 0.008) were significantly associated with anaemia in pregnancy. Except where co-infections exist (3.7%, χ2 = 11.267, p = 0.001), the rest of the single infections were insignificantly associated with anaemia. Collectively, intestinal helminthes were predominantly significant with anaemia in pregnancy (p = 0.001, χ2 = 107.800). The study revealed relatively high prevalence of parasitic infections among the study population, suggesting that about three-quarters of the anaemic mothers are either single or co-infected with parasitic agents.

1 July 2018 in Biomedicine & Pharmacotherapy
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Journal Article
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WWWilliams Walana
Williams Walana
YYYing Ye
Ying Ye
MLMing Li
Ming Li
JWJingjing Wang
Jingjing Wang
BWBing Wang
Bing Wang
FLFang Li
Fang Li

12 June 2017 in BMC Infectious Diseases
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FDFREDERICK DUN-DERY
FREDERICK DUN-DERY
MAMartin Nyaaba Adokiya
Martin Nyaaba Adokiya
WWWilliams Walana
Williams Walana
EYErnestina Yirkyio
Ernestina Yirkyio
JZJuventus B. Ziem
Juventus B. Ziem
Viral Hepatitis B is of a major public health concern globally, especially in developing countries. Expectant mothers’ knowledge of Mother-To-Child Transmission (MTCT) of the disease is significant in preventing the spread from an infected mother to her child. This study sought to assess the expectant mothers’ knowledge of Mother-To-Child Transmission of viral hepatitis B in the Wa Municipality and Lawra District of Upper West Region, Ghana. A descriptive cross-sectional study with a multi-stage sampling technique was employed to select a total of 450 study respondents (expectant mothers), and a semi-structured questionnaire was used for the data collection. Respondents were interviewed using face-to-face interview technique. Majority (54.0%) of the respondents were aged between 25 and 35 years and the results were similar in both districts. Overall, 62.4% (281/450) of the respondents had at least Junior High level education, and 76.2% (343/450) were multigravida. Educational levels among respondents in the two areas were above 50.0% and considered relatively high. Respondents’ general knowledge of hepatitis B infection and disease was 46.0% (208/450). However, there was a slight difference between the two districts (40.1% in Lawra District and 51.6% in Wa Municipality). The overall knowledge level on MTCT of viral hepatitis B among the respondents was 34.7% (156/450): the Wa Municipality recorded higher knowledge (43.3%) compared to 24.8% in Lawra District. The knowledge level of the expectant mothers on MTCT of viral hepatitis B is relatively low in Upper West Region, Ghana. Majority of the respondents had some form of formal education. The age, marital status, education, occupation, gravity and family setup were found to be associated with knowledge of Hepatitis B infection and MTCT. Thus, there is urgent need to intensify efforts of health staff to educate expectant mothers. In addition, home education and outreach activities should be intensified on HBV infection as well as MTCT. Consequently, planning, implementation and execution of preventive activities, especially in the antenatal clinics should critically consider the social and demographic variations of mothers.

2 June 2023 in International Journal of Microbiology
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Journal Article
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ezekiel vicarezekiel vicar
ezekiel vicar
SASamuel E. K. Acquah
Samuel E. K. Acquah
WWWilliams Walana
Williams Walana
Ezekiel Kofi VicarEzekiel Kofi Vicar
Ezekiel Kofi Vicar
EOEmmanuel K. Osbutey
Emmanuel K. Osbutey
GMGloria Ivy Mensah
Gloria Ivy Mensah
Urinary tract infection (UTI) is frequently encountered during pregnancy and is associated with adverse maternal, fetal, and neonatal effects. However, very little information is available on the prevalence of UTI among pregnant women in the northern part of Ghana, a region with a high birth rate. This study employed a cross-sectional analysis of the prevalence, antimicrobial profile, and risk factors associated with UTI in 560 pregnant women attending primary care for antenatal check-ups. Sociodemographic obstetrical history and personal hygiene information were obtained using a well-structured questionnaire. Afterward, clean catch mid-stream urine samples were collected from all participants and subjected to routine microscopy examination and culture. Of 560 pregnant women, 223 cases (39.8%) were positive for UTI. There was a statistically significant association between sociodemographic, obstetric, and personal hygiene variables and UTI ( ). Escherichia coli (27.8%) was the commonest bacterial isolate followed by CoNS (13.5%) and Proteus species (12.6%). These isolates exhibited greater resistance to ampicillin (70.1–97.3%) and cotrimoxazole (48.1–89.7%) but were fairly susceptible to gentamycin and ciprofloxacin. Gram-negative resistance to meropenem was up to 25.0%, and Gram positives resistance to cefoxitin and vancomycin was up to 33.3% and 71.4% respectively. The current findings extend our knowledge of the high frequency of UTIs and associated risk factors in pregnant women with E. Coli being the predominant and usual isolate. Variation existed in the resistance pattern of isolates to various drugs, underscoring the need to perform urine culture and susceptibility before treatment.

1 November 2023 in Health Science Reports
Verified
Journal Article
Open access
WWWilliams Walana
Williams Walana
EVEzekiel K. Vicar
Ezekiel K. Vicar
EKEugene D. Kuugbee
Eugene D. Kuugbee
IDIsaac Dari
Isaac Dari
GBGrace Bichenlib
Grace Bichenlib
JZJuventus B. Ziem
Juventus B. Ziem
Transfusion transmissible infections (TTIs) remain a major health challenge particularly in developing countries. Here, we present a multicentered hospital‐based retrospective study on the prevalence, distribution, and risk factors of TTIs in Ghana. Data on blood donors from four health facilities, namely Nkwanta South Municipal Hospital (Oti region), Weija‐Gbawe Municipal Hospital (Greater Accra region), SDA Hospital (Northern region) and Wa Municipal Hospital (Upper West region) were extracted and analyzed. Descriptive statistics and multinomial logistic regression were applied to compare sociodemographic data with TTI status. A total of 6094 blood donors were included in this study, and 2% were females. The overall prevalence of TTIs was 21.0% (1232/5868). Specifically, the prevalence of HBV, HCV, HIV, and Syphilis was 6.6% (385/5868), 4.9% (286/5830), 2.9% (168/5867), and 6.8% (393/5739), respectively. Wa dominated in all the viral agents considered in this study, while the Oti region recorded the highest prevalence in T. pallidum. The odds of HBV infection was 3.1 (p = 0.008) among first‐time donors, while that for HCV was 2.8 (p = 0.042). For rural dwellers, donors significantly had T. pallidum (p < 0.001; OR = 2.8), HCV (p < 0.001; OR = 2.9), and HIV (p = 0.028; OR = 1.5) infections. Generally, the recipients of transfused blood were predominantly pregnant mothers, followed by children and accident victims. This study has revealed significant disparities and relatively high prevalence of TTIs in Ghana, specifically HBV, HCV, HIV and T. pallidum infections. The variations suggest the presence of unique health challenges per study area, hence the need for a tailored intervention for each study site.

18 June 2012 in Annals of Clinical Microbiology and Antimicrobials
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FMFelix C Mills-Robertson
Felix C Mills-Robertson
STSamuel C K Tay
Samuel C K Tay
GDGoerge Duker-Eshun
Goerge Duker-Eshun
WWWilliams Walana
Williams Walana
KBKingsley Badu
Kingsley Badu
Background: Following claims that some plants have antimicrobial activities against infectious microbes, the in vitro antimicrobial activities of different solvent fractions of ethanolic extract of Cryptolepis sanguinolenta were evaluated against eight standard bacteria and clinical isolates. Methods: The solvent partitioning protocol involving ethanol, petroleum ether, chloroform, ethyl acetate and water, was used to extract various fractions of dried pulverized Cryptolepis sanguinolenta roots. Qualitative phyto-constituents screening was performed on the ethanol extract, chloroform fraction and the water fraction. The Kirby Bauer disk diffusion method was employed to ascertain the antibiogram of the test organisms while the agar diffusion method was used to investigate the antimicrobial properties of the crude plant extracts. The microplate dilution method aided in finding the MICs while the MBCs were obtained by the method of Nester and friends. The SPSS 16.0 version was used to analyze the percentages of inhibitions and bactericidal activities. Results: The phytochemical screening revealed the presence of alkaloids, reducing sugars, polyuronides, anthocyanosides and triterpenes. The ethanol extract inhibited 5 out of 8 (62.5%) of the standard organisms and 6 out of 8 (75%) clinical isolates. The petroleum ether fraction inhibited 4 out of 8 (50%) of the standard microbes and 1 out of 8 (12.5%) clinical isolates. It was also observed that the chloroform fraction inhibited the growth of all the organisms (100%). Average inhibition zones of 14.0 ± 1.0 mm to 24.67 ± 0.58 mm was seen in the ethyl acetate fraction which halted the growth of 3 (37.5%) of the standard organisms. Inhibition of 7 (87.5%) of standard strains and 6 (75%) of clinical isolates were observed in the water fraction. The chloroform fraction exhibited bactericidal activity against all the test organisms while the remaining fractions showed varying degrees of bacteriostatic activity. Conclusion: The study confirmed that fractions of Cryptolepis sanguinolenta have antimicrobial activity. The chloroform fraction had the highest activity, followed by water, ethanol, petroleum ether and ethyl acetate respectively. Only the chloroform fraction exhibited bactericidal activity and further investigations are needed to ascertain its safety and prospects of drug development.