The Hidden Impact of the COVID-19 Pandemic on Routine Childhood Immunization Coverage in Cameroon
, Pietro Di Mattei 3, Sangwe Clovis Nchinjoh 1,4, Nnang Nadege Edwige 1, Bernard Nsah 1, Nkwain Jude Muteh 3, Shalom Tchokfe Ndoula 5, Rakiya Abdullahi 6, Chen Stein Zamir 4, Andreas Ateke Njoh 5,7, Amani Adidja 8, Sidy Ndiaye 9, Owens Wiwa 1, Emanuele Montomoli 2,10,11 and Sue Ann Costa Clemens 2,12
Round 1
Reviewer 1 Report
The paper is good
But the following comments should be done
1. There are many grammatical, typographical errors and inconsistent mathematical expressions in the paper. They can be easily seen from the text. Read carefully.
2. What is your main contribution? The contribution of the current work should be emphasized in the introduction. Mention the contribution in terms of convergence, any innovation in the method, stability, CPU, and minimum errors because the literature is filled such kind of problems as well as method. Give reasons in details.
3. What kind of reason sent you to study this topic?
4. What are the limitations and benefits of your work?
5. More discussions are needed to be detailed in numerical results.
6. I was also wondering that if the authors can give satisfactory physical discussions about the problems.
7. The abstract, conclusion and introduction need to be re-written/revised properly, in terms of the suggestions.
8. Should add order of convergence numerically and theoretically and make share to match with theoretically part. Also add the CPU time.
9. All figures are needed in more attractive way.
Author Response
We sincerely appreciate the responses from Reviewer #1. These are constructive and really helpful. We have attached a word document with a point-by-point response to the comments made by this reviewer.
Author Response File: 
Author Response.pdf
Reviewer 2 Report
Dear Authors,
Your article has programmatic relevance for Cameroon and other Central African countries in particular.
It is well written and pleasant to read in general.
Nevertheless, I have made some suggestions in the manuscript, please take them into account when reviewing the manuscript.
Comments for author File: Comments.pdf
Author Response
Please see attached the point-by-point response to the comments made by the second reviewer.
Author Response File: Author Response.pdf
Round 2
Reviewer 1 Report
Table 1 is not referred to or commented on
When referring to tables and figures, the first letter must be capitalized
What is the source of your results for me in the tables?
The statistical software used is not indicated.
Reference should be made to some statistical models of the COVID-19 pandemic as "Modeling of COVID-19 vaccination rate", "Modeling the Recovery Rate of COVID-19", "Modelling COVID-19 Data Sets", "Application on COVID-19 Mortality Numbers" or "Applications to the COVID-19 Mortality Rate in Two Different Countries".
References must be updated and the writing format standardized
Very little conclusion. More suggested concluding details should be added, as well as a summary of the findings of the study
Author Response
Response to Reviewer Comments
Point 1: Table 1 is not referred to or commented on
Response 1: Table 1 is referred to in the first line of paragraph 3 in the results section.
Point 2: When referring to tables and figures the first letter must be capitalized
Response 2: This error has been identified in the first line of paragraph 3 in the results section and addressed.
Point 3: What is the source of your results for me in the tables.
Response 3: The study considered aggregated secondary district-level data on routine childhood immunization from District Health Information System (DHIS)-2 as highlighted in the second sentence under study design and setting. The formulae used to calculate and populate the table is highlighted under data management and analysis.
Point 4: The statistical software used is not indicated.
Response 4: The statistical software used is indicated in the first sentence under data management and analysis.
Point 5: References should be made to some statistical models of the COVID-19 pandemic as “modeling of the COVID-19 vaccination rate”, “Modelling the recovery rate of COVID-19”, “Modeling COVID-19 data sets”, “Application on COVID-19 mortality numbers”, or “Application to the COVID-19 mortality rate in two countries”
Response 5: No modeling approach was used in this study.
Point 6: References must be updated and the writing format standardized.
Response 6: No reference/citation seen requiring an update. The writing format standardized.
Point 7: Very little conclusion. More suggested concluding details should be added as well as a summary of the findings of the study.
Response 7: This has been addressed under the conclusion section.
