Parasites of fish constitute one of the major problems to fish health. Parasites of fish have been a great concern since they often cause disease conditions in fishes. This study described the parasitic faunas of eight fresh water bodies in Edo state (Ikpoba river, Ogba river, Ujogba river, Niger river at Illushi, Obe river, Gelegele river, Niger river at Agenebode and Osomegbe river). The duration of fish sampling was from October, 2017 to November, 2017.The fish samples (whole catch sourced from fishermen) were collected for identification, morphometric analysis and examination for the presence of parasites. One-way ANOVA and Tukey Honest Test were used to compare the data among size classes at the level of p <0.05. Three orders (Lepidosirenformes, Siluriformes and Polyteriformes), eight families  (Protopteridae, Clariddidae, Channiddae, Polypterididae, Melapteridae, Clarotidae, Cichlidae and Lorcariidae) and fourteen genera were examined. The study had an overall prevalence of 25.34%. The highest prevalence of fish parasitic infection was recorded in Niger river along Agenebode. Overall, parasite taxa recovered were nematodes (65.50%), trematodes (27.00%), cestodes (4.27%) and acanthcephalans (3.27%). The most infected fish species was Clarias gariepenus (13.77%). The helminth taxa (nematodes) had the highest prevalence of parasites (65.50%). The largest number of parasites isolated was Camallanus cotti (30.43%) and Procamallanus laevionchus (17.39%). This study showed river Niger at Agenebode with most parasitic prevalence, nematodes as the most prevalent parasitic taxa and Clarias  gariepenus as the most infected fish species. Keywords: Edo state, Freshwater fishes, Fish parasites, Helminths, Parasite taxa, Nigeria

Mastitis is a disease of livestock that directly impede livestock production and thus hindering the socio-ecological development of sub-Saharan Africa. Studies have estimated the prevalence of this disease in 30% of Africa countries, with Ethiopia having the highest prevalence. The coverage is low, despite the wide livestock and dairy farms distribution in Africa. Furthermore, estimated economic losses due to the impact of mastitis are lacking in Nigeria. The disease is endemic in Nigeria as indicated by the available data and there are no proposed management plans or control strategies. This review is thus presented to serve as a wakeup call to all parties involved to intensify efforts towards the diagnosis, control, and management of the disease in Nigeria.

Background: Intestinal helminthic infections are generally common in children accounting for the largest disability adjusted life years (DALYs) of all the parasitic agents. In this study, we determined the prevalence of intestinal helminthic infections among secondary school students in a semi-urban community in Edo State, Nigeria. Methodology: A descriptive cross sectional study of 489 students from four secondary schools in Esan West Local Government Area of Edo State, Nigeria was conducted between December 2018 and July 2019. The schools were selected by stratified random sampling and all eligible students in each school were enrolled. Stool samples were collected from each student into sterile universal bottle and direct wet mount as well as formol-ether concentrated samples were examined under compound light microscope at the Animal and Environmental Biology Laboratory of the University of Benin, Benin City, Nigeria. Structured questionnaire was administered to collect data on socio-demographic and potential risk factors for helminthic infection. Data were analysed with SPSS version 22.0 and associations between variables compared using Chi square or Fischer exact test, with p<0.05 as significant value.Results: Of the total 489 students examined (261 males, 228 females), 6 had intestinal helminthic infection, giving an overall prevalence rate of 1.2%, with 0.7% (n=2) in males and 1.8% (n=4) in females (p=0.4244). Three helminthic parasites, Ascaris lumbricoides, Trichuris trichiura and Ancylostoma duodenale were identified. All the 6 subjects with helminthiasis had been de-wormed at interval of more than 1 year. Regular hand washing practices (p<0.025) and de-worming interval of 1 year or less (p=0.000) were factors significantly associated with low prevalence of helminthic infection while other risk factors were not significantly associated. Conclusion: The study shows low prevalence of intestinal helminthic  infections among secondary school students in Esan West LGA, Edo State, Nigeria. The high level of hand hygiene practices among the participants may account for the low prevalence, which emphasizes the effective role of hygiene practices in the control and elimination of intestinal parasitic infections. De-worming of students at regular interval (yearly) is  recommended.Keywords: Intestinal helminth, Prevalence, risk factors, hand hygiene, de-wormingFrench Title: Prévalence des infections helminthiques intestinales chez les élèves du secondaire dans l'État d'Edo, au NigériaContexte: les infections helminthiques intestinales sont généralement fréquentes chez les enfants représentant les plus grandes années de vie corrigées de l'incapacité (Avci) de tous les agents parasitaires. Dans cette étude, nous avons déterminé la prévalence des infections helminthiques intestinales chez les élèves du secondaire dans une communauté semi-urbaine de L'État D'Edo, au Nigeria Méthodologie: une étude transversale descriptive de 489 étudiants de quatre écoles secondaires dans la zone de Gouvernement Local D'Esan West de L'État D'Edo, au Nigeria, a été menée entre décembre 2018 et juillet 2019. Les écoles ont été sélectionnées par échantillonnage aléatoire stratifié et tous les élèves admissibles de chaque école ont été inscrits. Des échantillons de selles ont été prélevés chez chaque étudiant dans une bouteille universelle stérile et une monture humide directe ainsi que des échantillons concentrés de Formol-éther étaient examinés au microscope optique composé au Laboratoire de Biologie animale et environnementale de L'Université du Bénin, Benin City, Nigeria. Un questionnaire structuré a été administré pour recueillir des données sur les facteurs de risque sociodémographiques et potentiels d'infection helminthique. Les données étaient analysées avec la version SPSS 22.0 et les associations entre les variables comparées à L'aide du Chi carré ou du test Fischer exact, avec p<0,05 pris comme valeur significative. Résultats: sur les 489 étudiants examinés (261 hommes, 228 femmes), 6 avaient une infection helminthique intestinale, ce qui donne un taux de prévalence global de 1,2%, avec 0,7% (n=2) chez les hommes et 1,8% (n=4) chez les femmes (p=0,4244). Trois parasites helminthiques, Ascaris lumbricoides, Trichuris trichura et Ancylostoma duodenale ont été identifiés. Tous les 6 sujets avec d'helminthiase avaient été vermifugés à intervalle de plus d’un an. Les pratiques régulières de lavage des mains (p<0,025) et l'intervalle vermifuge de 1 an ou moins (p=0,000) étaient des facteurs significativement associés à une faible prévalence de l'infection helminthique alors que d'autres facteurs de risque n'étaient pas significativement associés. Conclusion: L'étude montre une faible prévalence des infections  helminthiques intestinales chez les élèves du secondaire à Esan West LGA, dans L'État D'Edo, au Nigeria. Le niveau élevé de pratiques d'hygiène des mains chez les participants peut expliquer la faible prévalence, ce qui souligne le rôle efficace des pratiques d'hygiène dans le contrôle et l'élimination des infections parasitaires intestinales. Il est recommandé de déparasiter les élèves à intervalles réguliers (chaque année).Mots-clés: helminthes intestinaux, prévalence, facteurs de risque, hygiène des mains, vermifuge