Ornithodoros savingyi – the tick vector of Candidatus Borrelia kalaharica in Nigeria

Endemic tick-borne relapsing fever (TBRF) has not been documented in Nigeria, yet clinically compatible cases have been described and soft tick species are endemic in surrounding countries. Consequently, our aim was to investigate if TBRF associated Borrelia were present in Nigeria. To address this, we examined 49 soft tick pools to identify the tick species and screen for Borrelia. The tick species was revealed by 16S 32 rRNA amplification and Sanger sequencing to be Ornithodoros savignyi, an aggressive multi-host rapidly feeding species with significant veterinary impact. We detected Borrelia in three of 49 pooled samples (6%). Molecular analysis of amplified 16S rRNA, flagellin and intragenic spacer fragments disclosed that this Borrelia was synonymous with the recently described Candidatus Borrelia kalaharica described in a tourist returning to Germany from South Africa. Given the widespread endemic range of this tick vector, TBRF should be considered as part of the differential diagnosis in patients with fever returning from arid areas of Africa and further afield

Cross-sectional study of Fasciola gigantica and other trematode infections of cattle in Edu Local Government Area, Kwara State, North-central Nigeria

BACKGROUND: Trematode infections of livestock are of global veterinary and public health importance causing serious economic losses. Majority of data on burden of trematode infections in Nigeria are based on abattoir surveys and there are very few data on herd level risk factors. The present study investigated the prevalence of, and herd level risk factors for, fasciolosis and other trematode infections in cattle in Edu Local Government Area (LGA). METHODS: A cross-sectional survey used two-stage study design to investigate cattle belonging to 65 households. Two questionnaires were administered for household-level and individual cattle-level data. Faecal and blood samples were obtained from the cattle. Logistic regression analyses were performed to determine risk factors for infections. RESULTS: Of 686 faecal samples analysed, 74.9 %, 16.1 %, 7.3 % and 1.2 % were positive for infections with Fasciola gigantica, paramphistomes, Dicrocoelium hospes and Schistosoma bovis respectively. Fasciola gigantica had higher prevalence in adult cattle (77.3 %) than weaners (62.5 %). Majority of co-infections was a combination of F. gigantica with paramphistomes 84/130 (64.6 %). Most (58.9 %) of the cattle belonged to FAMACHA© score 2. The mean packed cell volume (PCV) was 34.4 %. The sensitivity and specificity of FAMACHA© for anaemia (PCV < 24 %) were 18.2 and 96.9 %, respectively. Positive correlation was obtained between faecal egg counts for F. gigantica and paramphistomes (R = 0.15, P = 0.0001). Adult cattle were more likely to be infected with F. gigantica (odds ratio, OR: 1.94; Confidence Interval, CI: 1.19–3.16) than weaners. Cattle belonging to household heads aged between 40–59 years were more likely infected with paramphistomes (OR: 1.95; CI: 1.02–3.74) than those belonging to other age groups. Cattles from herds with size ≥ 100 were more likely infected with D. hospes than those from smaller herds (OR: 6.98; CI: 2.94–16.6). CONCLUSION: This study revealed high prevalence of infection with F. gigantica in Kwara State. The co-infections by F. gigantica and paramphistomes with a positive correlation should be considered during anthelmintic therapy. There is a need to optimise and validate the FAMACHA© for use in cattle based on breeds and variation in colour of ocular mucous membrane. Risk factors identified could assist in tailoring control strategies for various trematode infections to particular groups of farmers and cattle. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1186/s13071-016-1737-5) contains supplementary material, which is available to authorized users

Community-level survey of coronavirus disease 2019 (COVID-19) preventive measures in Kwara State, Nigeria : good knowledge vs poor attitude

Publisher Copyright: © 2022Background: The public knowledge and adherence to the established coronavirus disease 2019 (COVID-19) precautionary measures are crucial to Nigeria's war against the pandemic. Public health education on its preventive practices at the grassroots level was initially crucial to achieving a lower COVID-19 incidence in Kwara State, Nigeria. Methods: We assessed the knowledge of, and adherence to COVID-19 precautionary measures at the community level among 795 respondents from the three senatorial zones of Kwara State. Results: 54.5% (433/795) of the respondents were aged between 21 and 40 years, and 45.9% (365/795) of the respondents had a bachelor's degree or higher. Study participants had a good knowledge of COVID-19, its symptoms, and its mode of transmission. 91.8% of the respondents (730/795) had a positive perception of the COVID-19 preventive measures while 96.1% (763/795) of the respondents agreed that maintaining social distance was important in curbing the COVID-19 pandemic. However, only 38% (302/795) of them used face masks and only 25.7% (204/795) of the respondents used hand sanitizers. In addition, only 31.9% (253/795) of the respondents isolated themselves when they were ill. Multi-variable logistic regression analysis revealed that education, occupation, gender, and ethnicity were significantly associated with positive COVID-19 preventive practices among residents of Kwara State. Civil servants were more likely (AOR: 3.14; 95% confidence interval [CI]: 0.67 to 14.82; P = 0.034) to have positive preventive attitudes than other respondents. Study participants with tertiary education and those that were Yoruba (ethnicity) were 14.81 times more likely (95% CI: 4.29 to 51.05; P = 0.001) and 5.19 times more likely (95% CI: 1.82 to 14.84; P = 0.007) to have positive attitudes towards the laid-down COVID-19 preventive measures respectively. Conclusion: The poor community adherence to the COVID-19 preventive practices could pre-dispose Kwara to more COVID-19 cases. More community engagement activities are needed to fully curb the spread of the COVID-19. Public health education should focus on preventive measures, vaccine acceptance, and community monitoring of COVID-19.Peer reviewe

Perception of canine rabies among pupils under 15 years in Kwara State, North Central Nigeria

Publisher Copyright: © 2022 Al-Mustapha et al.Rabies is an endemic, highly fatal, and vaccine-preventable disease with severe socio-eco-nomic implications. Most (99%) human rabies cases are transmitted through dog bites. Children under 15 years account for 40% of all dog bite victims and 35–50% of all rabies deaths. Rabies awareness among this vulnerable group is critical to rabies prevention. However, there is a paucity of data on rabies awareness among pupils under 15. Hence, this study assessed the awareness and attitude of pupils under 15 years towards canine rabies in Kwara state in Nigeria. The study was conducted as a cross-sectional survey of 1,388 pupils across the state using a structured questionnaire that was administered as a one-on-one interview using the Open Data Kit on Android phones in December 2019. Of the 1388 pupils included in this study, only 21.7% (n = 301) of them were aware of rabies. The mean rabies score was 1.7±0.8 and only 29.2% (n = 88/301) of the pupils had adequate knowledge of canine rabies. The dog ownership rate was 18.7% (n = 259) with an average of 1.93 dogs per household. Approximately 5% (n = 66) of the pupils have been previously bitten by a dog. One-third of the dog bite victims (35%, n = 23/66) were managed and treated at home and only 12% (n = 8/66) were treated in a health facility. The result of the multivariable logis-tic regression showed that students aged between 13–15 years were more likely (OR: 1.93; 95% CI: 0.72–3.01; p < 0.001) to have adequate knowledge of rabies than the younger pupils. Similarly, pupils that have dogs in their households (OR: 2.09; 95%CI: 1.49–2.75; p < 0.001) and those that reside in Kwara South (OR:1.78 95% CI:1.29, 2.44; p < 0.001) were more likely to be aware and have adequate knowledge of canine rabies respectively. Finally, Pupils from non-dog-owning households were more likely (OR:2.2; 95% CI: 1.45, 4.42; p < 0.001) to have been bitten by dogs than those from dog-owning households. The awareness and attitude of pupils under 15 to canine rabies was poor. We advocate the introduction of rabies lessons into the school curriculum in Kwara State to reduce the incidence of dog bites and prevent dog-mediated human rabies.Peer reviewe

Public Health Surveillance for Adverse Events Following COVID-19 Vaccination in Africa

Local, national, and international health agencies have advocated multi-pronged public health strategies to limit infections and prevent deaths. The availability of safe and effective vaccines is critical in the control of a pandemic. Several adverse events have been reported globally following reception of different vaccines, with limited or no data from Africa. This cross-sectional epidemiological study investigated adverse events following COVID-19 vaccination in Africans from April–June, 2021 using a structured online questionnaire. Out of 1200 participants recruited, a total of 80.8% (n = 969) respondents from 35 countries, including 22 African countries and 13 countries where Africans live in the diaspora, reported adverse events. Over half of the vaccinees were male (53.0%) and frontline healthcare workers (55.7%), respectively. A total of 15.6% (n = 151) reported previous exposure to SARS-CoV-2, while about one-fourth, 24.8% (n = 240), reported different underlying health conditions prior to vaccination. Fatal cases were 5.1% (n = 49), while other significant heterogenous events were reported in three categories: very common, common, and uncommon, with the latter including enlarged lymph nodes 2.4% (n = 23), menstrual disorder 0.5% (n = 5), and increased libido 0.2% (n = 2). The study provided useful data for concerned authorities and institutions to prepare plans that will address issues related to COVID-19 vaccines

Additional file 2: Table S2. of Cross-sectional study of Fasciola gigantica and other trematode infections of cattle in Edu Local Government Area, Kwara State, north-central Nigeria

Univariate analysis of trematode infections in cattle based on household and cattle data in Edu, Kwara State, Nigeria. (XLSX 16 kb