<p>The problem should be explicitly stated in the background section and thus the rationale.</p><p>The methods section should be improved and aligned to the objectives. Define the data sources and case definitions. Inclusion and exclusion criteria.&nbsp;</p><p>Show methods for data analysis.&nbsp;</p><p>Show methods for collecting and analyzing the surveillance system attributes. rationale for analysis this? they are too many !</p><p>Include the observed results besides the proportions.</p>