Vol 74, No 1 (2023)
Letter to the Editor
Published online: 2023-03-24

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Haematological changes in COVID-19: correspondence

Rujittika Mungmunpuntipantip1, Viroj Wiwanitkit23
Pubmed: 36974497
IMH 2023;74(1):74.


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Int Marit Health
3; 74, 1: 74
Copyright © 202
ISSN 1641-9251
eISSN 2081-3252

Haematological changes in COVID-19: correspondence

Rujittika Mungmunpuntipantip1Viroj Wiwanitkit23
1Private Academic Consultant, Bangkok Thailand
2Dr DY Patil Vidhyapeeth, Pune, India
3Joseph Ayo Babalola University, Ikeji-Arakeji, Nigeria

Dr. Rujittika Mungmunpuntipantip, Private Academic Consultant, Bangkok Thailand, e-mail: rujittika@gmail.com

Received: 29.12.2022 Accepted: 7.02.2023

This article is available in open access under Creative Common Attribution-Non-Commercial-No Derivatives 4.0 International (CC BY-NC-ND 4.0) license, allowing to download articles and share them with others as long as they credit the authors and the publisher, but without permission to change them in any way or use them commercially.

We would like to share ideas on the publication “Haematological changes in sailors who had COVID-19” [1]. Ignatyev et al. [1] set out to investigate how frequently sailors with an acute coronavirus infection experienced haematopoietic alterations. Relative or absolute leukopenia is the most frequent laboratory change in the white blood cell (WBC) count in patients with the prior coronavirus disease 2019 (COVID-19), according to Ignatyev et al. [1]. According to Ignatyev et al. [1], persistent changes in WBC count should be evaluated by a complex of typical alterations because they are not necessarily beyond the reference range for absolute values. Ignatyev et al. [1] came to the conclusion that a patient with a history of COVID-19 warrants a thorough investigation for the post-COVID-19 syndrome if there are any typical alterations in WBC count. We both believe that a thorough examination into the causes of the haematological anomalies is necessary. The COVID-19 may or may not have anything to do with the observed change in the current report. There could be conflicting problems. To begin with, it’s important to rule out any concomitant infections. As an illustration, dengue is a potential co-infection that may have an impact on the haematological parameter [2]. Second, underlying haematological conditions may potentially have an impact. It is important to rule out a variety of nutritional issues such iron and folate deficient illnesses as well as hereditary diseases like haemoglobinopathies.

Conflict of interest: None declared


  1. Ignatyev O, Panyita O, Prutiian K, et al. Haematological changes in sailors who had COVID-19. Int Marit Health. 2022; 73(4): 178–180, doi: 10.5603/IMH.2022.0031, indexed in Pubmed: 36583404.
  2. Dalugama C, Seneviratne SL. Dengue and COVID-19 co-infections: an important consideration in the tropics. Trans R Soc Trop Med Hyg. 2022 [Epub ahead of print], doi: 10.1093/trstmh/trac114, indexed in Pubmed: 36479900.