Chlamydia trachomatis among women with normal and abnormal cervical smears in Lagos, Nigeria

Background: Chlamydia trachomatis is one of the most common sexually transmitted disease agents. Cervical intraepithelial neoplasia (CIN) has been independently associated with serological evidence of chlamydial infection. This study therefore was aimed to determine the prevalence of C. trachomatis and the association between Chlamydia trachomatis infection and cervical intra-epithelial lesion.Methods: It is a cross-sectional case control study carried out at the Lagos University Teaching Hospital (LUTH) with the study participants selected into 2 groups: the case group (women with abnormal smears) and the control group (women with normal Pap smear). Relevant information was obtained using a structured interviewer-administered questionnaire. Endocervical swab sample was collected and analysed by Polymerase Chain Reaction (PCR) test. Data analysis was done using Epi-Info statistical package (version 3.4.3).Results: The overall prevalence of C. trachomatis was 27.7% with a decreasing trend noted with age (P <0.05). The majority of women with C. trachomatis were in the reproductive age group of 25-45 years. 50% of women with abnormal smears were positive for C. trachomatis, compared to only 16.7% of the controls (X2 = 10.95; P = 0.001). There was no statistically significant association between prevalence of C. trachomatis and cervical cytological types (X2 = 1.892; P = 0.595)Conclusions: The study revealed an association between Chlamydia trachomatis and precancerous lesions of the cervix. Routine screening and treatment of sexually active adolescents and women in the reproductive age group is recommended as an indirect measure to reducing the incidence of cervical cancer in Nigeria

Monitoring of Lassa virus infection in suspected and confirmed cases in Ondo State, Nigeria

Introduction:&nbsp;Lassa virus (LASV), the causative agent of Lassa fever (LF), an endemic acute viral haemorrhagic illness in Nigeria, is transmitted by direct contact with the rodent, contaminated food or household items. Person-to-person transmission also occurs and sexual transmission has been reported. Thus, this study investigated the presence of LASV in body fluids of suspected and confirmed cases. Methods:&nbsp;this was a cross-sectional study between March 2018 and April 2019 involving 112 consenting suspected and post ribavirin confirmed cases attending the Lassa fever treatment center in Ondo State. Whole blood was collected from 57 suspected and 29 confirmed cases. Other samples from confirmed cases were 5 each of High Vaginal Swab (HVS) and seminal fluid; 12 breast milk and 4 urine. All samples were analyzed using reverse transcription-PCR (RT-PCR) targeting the S-gene of LASV. Results:&nbsp;analysis of whole blood by RT-PCR showed that 1/57 (1.8%) suspected and 1/29 (3.4%) confirmed post ribavirin treated cases were positive. While LASV was detected in 2/5 (40%) post ribavirin treated seminal fluids and 1/11 (8.3%) breast milk. However, LASV was not detected in any of the HVS and urine samples. Conclusion:&nbsp;the detection of LASV in seminal fluid and breast milk of discharged post ribavirin treated cases suggests its persistence in these fluids of recovering Nigerians. The role of postnatal and sexual transmissions in the perennial outbreak of LF needs to be further evaluated

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Fig 1 -

Cycle Threshold (Ct) values for SARS-CoV-2 positivity to (A) E-gene, (B) N-gene, and (C) Orf1ab gene respectively, show good comparison on both the Saliva and the Nasopharyngeal swab: The median Cycle Threshold (Ct) values for the three SARS-CoV-2 genes (E, N, and Orf1ab) of the positive samples (Ct 40) from both the nasopharyngeal swab and saliva samples were compared using the Wilcon signed rank exact test. The p values of 0.07715, 0.8438, and 0.2293 were determined for the E, N, and Orf1 ab genes respectively. There were no statistically significant differences between the median SARS-CoV-2 E-gene, N-gene, and Orf1ab gene Ct values detected for the Nasopharyngeal swab and Saliva samples.</p

Raw data and analysis.

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Saliva all positive figures.

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Age and sex distribution of study participants (n = 299).

Age and sex distribution of study participants (n = 299).</p

SARS-CoV-2 positivity by gender and sample type.

SARS-CoV-2 positivity by gender and sample type.</p

Relationship of SARS-CoV-2 positivity with gender and age groups.

Relationship of SARS-CoV-2 positivity with gender and age groups.</p