<p>Title: the mention of Mali and Nigeria may mean that the study focused on the two countries as a whole while the focus was only in two towns/cities (Bamako and Ibadan) in the two countries. In addition, &nbsp;there is no mention of the countries in the body of the abstract. The authors could consider revising the title. Was there intention to compare the prevalence in the two areas?</p><p>Background: There is mention of cross-sectional study while the sampling procedure points to census/survey. The authors should clarify on whether they sampled the study participants from target population or enrolled all. &nbsp;Consider including morbidity and mortality data associated with Toxoplasma gondii and Rubella virus infections, especially for the study areas. &nbsp;Write ECOWAS in full or make reference to West Africa.&nbsp;</p><p>Methods: It is not clear how the distribution of patients was done for the two regions under study. Is Elecsys a brand? if yes then consider using the trademark.</p><p>Results: &nbsp;Consider including proportion to support claim of most prevalent in age group 21-30 years. There are results for risk factors while there are no corresponding methods for the same; consider including methods for the same.</p><p>Conclusion: The 1.8% prevalence may not qualify to be described as "high" unless there is justification for same</p>