ABSTRACT
Parvovirus B19 (PVB19) is a DNA virus whose main tropism is erythroid precursors, it is responsible for infections that can be life-threatening in fetuses and immunocompromised individuals. The aim of this study was to determine the seroprevalence of Parvovirus B19 in a Moroccan population. We conducted a retrospective study between March 2019 and July 2022 at the Central Laboratory of Virology of Ibn Sina University Hospital of Rabat. All included samples were qualitatively tested for parvovirus B19 anti-VP2 IgG by ELISA on the Chorus analyzer (Diesse diagnostic). Of the 343 patients included, 181 (53%) were women. 165 (48%) were adults with an average age of 45 years [17 - 89], while 178 (52%) were children with an average age of 6 years [0.7 - 16]. Anti-PVB19 IgG were positive in 166 patients, giving an overall seroprevalence of 48.4%. The latter was significantly higher in adults (63.1% vs. 34.8%; p= <0.001) and increased significantly with age, from 32.5% in children aged [7 months to 5 years], to 65.1% in patients over 35 years (p= <0.001). Gender had no impact on seroprevalence. Our study showed an overall seroprevalence of parvovirus B19 of 48.4%. Seroprevalence increased significantly with age, which aligns with the findings in the literature. No previous data in Morocco.

ABSTRACT
In emergency medicine, Troponin Ic is a useful diagnostic and prognostic biomarker in the management of ischemic cardiac pathologies. However, its prescription often exceeds international recommendations. The aim of this study is to evaluate practices concerning the prescription of Troponin assays in the emergency department of the Mohammed V Military Training Hospital in Rabat. This is a prospective study. Was included in this study, every patient admitted to the emergency department of the Mohammed V Military Training Hospital in Rabat and having at least one troponin assay during the period from December 25, 2020 to January 12, 2021. The assay was performed using the "ARCHITECT STAT Highly sensitive troponin-I" method. 135 patients for whom have prescribed a Troponin assay during the period of study. A total of 219 assays were performed. The mean age was 64 years, with a predominance of males. The main reasons for admission were chest pain (29.6%), dyspnea (26.6%), neurological disorders (16.3%) and respiratory distress (10.3%). A high Troponin Ic value during the first determination was observed in almost 37% of cases. In 63% of cases, the value was negative. 53.3% of prescriptions were considered as irrelevant according to pre-established criteria. A repeated Troponin Ic assays were performed in 31% (n=127) of cases. They were deemed relevant in 25% of cases. In 6% of patients, the appropriateness of repeat assays was not demonstrated. Compliance with good prescribing practices for Troponin significantly reduces the number of unjustified samples, with a real economic impact.

ABSTRACT
Background: Postpartum period is one of the critical periods for initiating contraception to reduce the unmet need for contraception. The study was aimed at reviewing records of postpartum contraception (PPC) users at the Rivers State University Teaching Hospital (RSUTH) to determine the prevalence, pattern of use, and the indications for postpartum contraception. Methods: A cross-sectional study of all cases of postpartum contraception at the RSUTH from 1st January 2018 to 31st December 2022. Descriptive and inferential statistics were derived using IBM, Statistical Product and Service Solutions (SPSS), version 25.0 (Armonk, NY). Results: The prevalence of postpartum contraception at the RSUTH was 18.5% of all contraceptive users or 63.4/1000 deliveries. Overall, a decreasing pattern of postpartum contraception was observed over the period under review. The commonest method of postpartum contraceptives used by participants was Implanon, accounting for 26.6% of total acceptors of postpartum contraception. This was followed by bilateral tubal ligation (25.1%), Jadelle (22.0%), and copper IUD (21.2%). The most common indication for the uptake of PPC was for spacing of childbirth (71.9%) respectively. Conclusion: The prevalence of postpartum contraception in RSUTH is low and demonstrates a decreasing trend. Women used postpartum contraception mainly for spacing and limiting of childbirth.