METHODS: We conducted a cross-sectional study of 871 participants from three regions of Nigeria. All serum samples were analysed using malaria RDT and the immunoblot molecular diagnostic assay recomLine Tropical Fever for the presence of arboviral antibody serological marker IgG (Mikrogen Diagnostik, Neuried, Germany) with DENV and ZIKV Nonstructural protein 1 (NS 1), DENV and ZIKV Equad (variant of the envelope protein with designated mutations to increase specificity), according to the manufacturer's instructions.
RESULTS: The overall IgG antibody seropositivity against DENV-flavivirus was 44.7% (389/871); 95% CI (41.41-47.99), while ZIKV-flavivirus was 19.2% (167/871); 95% CI (0.16-0.21), and DENV-ZIKV-flavivirus cocirculation antibody seropositivity was 6.2%5 (54/871); 95% CI (0.6-0.7) in the three study regions of Nigeria. The study cohort presented similar clinical signs and symptoms of flaviviruses (DENV and ZIKV) in all three study regions.
CONCLUSION: This study highlighted an unexpectedly high antibody seropositivity, burden, hidden endemicity, and regional spread of mono- and co-circulating flaviviruses (DENV and ZIKV) in Nigeria.Key messagesDengue flavivirus sero-cross-reactivity drives antibody-dependent enhancement of ZIKV infection.Both viruses share common hosts (humans) and vectors (primarily Aedes aegypti), and are thus influenced by similar biological, ecological, and economic factors, resulting in epidemiological synergy.Additionally, the actual burden in epidemic and interepidemic periods is grossly or chronically unknown and underreported. Despite this trend and the potential public health threat, there are no reliable data, and little is known about these arboviral co-circulation infections.
METHODS: A cross-sectional nationwide online survey was conducted over a 6-week period between May and June 2019. Invitation was sent to all the Heads of pharmacy department or pharmacists in charge of infectious diseases (ID) or antimicrobial pharmacists in tertiary hospitals in Nigeria. A validated questionnaire that consist of 24-items was used for data collection.
RESULTS: Forty-five hospitals were invited and 37 completed the survey (response rate, 82.2%). Five (13.5%) hospitals had a formal antimicrobial stewardship (AMS) team, with each of them having pharmacist representation. Regardless of the existence of an AMS team, hospital pharmacists have implemented AMS strategies, including evaluation of the appropriateness of antimicrobial prescriptions (54.1%) and monitoring of antimicrobial consumption (48.6%). The most common barriers to pharmacists' involvement in ASP were lack of training in AMS and ID (51.4%), lack of pharmacists with ID specialisation (40.5%) and lack of support from hospital administrators (37.8%). The majority of the pharmacists recommended training in AMS and ID (100%), participation on ward rounds (89.2%) and employment of more pharmacists (73%) as strategies to improve pharmacists' participation in ASP.
CONCLUSIONS: Hospital pharmacists are actively involved in AMS activities despite the lack of established AMS teams in most tertiary hospitals in Nigeria. However, lack of training and personnel were major barriers to pharmacist's involvement in ASP.
METHODS: We conducted a systematic review of articles on the factors influencing under-five childhood immunisation uptake in Africa. This was achieved by using various keywords and searching multiple databases (Medline, PubMed, CINAHL and Psychology & Behavioral Sciences Collection) dating back from inception to 2020.
RESULTS: Out of 18,708 recorded citations retrieved, 10,396 titles were filtered and 324 titles remained. These 324 abstracts were screened leading to 51 included studies. Statistically significant factors found to influence childhood immunisation uptake were classified into modifiable and non-modifiable factors and were further categorised into different groups based on relevance. The modifiable factors include obstetric factors, maternal knowledge, maternal attitude, self-efficacy and maternal outcome expectation, whereas non-modifiable factors were sociodemographic factors of parent and child, logistic and administration factors.
CONCLUSION: Different factors were found to influence under-five childhood immunisation uptake among parents in Africa. Immunisation health education intervention among pregnant women, focusing on the significant findings from this systematic review, would hopefully improve childhood immunisation uptake in African countries with poor coverage rates.