<p>Generally: Be consistent in using active voice.&nbsp;</p><p>Methods: What method was used for classification of cases? statistical methods not mentioned . What is completeness?&nbsp;</p><p>Methods are lacking</p><p>Results: Explanation of choice of result not necessary. Shorten the sentences. No explanations should be stated in results. No results for some objectives, for example, vaccination status</p><p>Some results have speculation.</p><p>Conclusion: Speculation in the conclusion.</p><p>&nbsp;</p>