Problematic COVID-19 published articles
| Journal | Indexing | Issue | Location of corresponding author’s institution | Finding |
| International Journal of Antimicrobial Agents 38 39 | MEDLINE | Concern regarding method, ethics review, and peer review | France | Expression of concern |
| Lancet Global Health 40 | MEDLINE | Data falsification | China | Retracted |
|
Zhonghua Er Ke Za Zhi
Chinese Journal of Pediatrics 41 | MEDLINE | Unknown | China | Retracted |
| Cellular & Molecular Immunology 42 | MEDLINE | Invalid conclusions due to flawed test methodology and incorrect biological material for study | China and USA | Retracted |
| Lancet 22 | MEDLINE | Authors unable to arrange an independent audit of the data foundational to the study due to blocked data access | USA | Retracted |
| New England Journal of Medicine 23 | MEDLINE | Authors unable to arrange an independent audit of the data foundational to the study due to blocked data access | USA | Retracted |
| Bulletin de la Dialyse à Domicile 43 | DOAJ | Data erroneous | France | Retracted |
| Lancet 44 | MEDLINE | Article is a commentary on a paper that subsequently was retracted22 | France | Retracted |
| Journal of Molecular Pharmaceuticals and Regulatory Affairs 45 | DRJI* | ‘The information pertaining in this paper is misleading the readers and creating massive conflicts amid the scientific community’45 | India | Retracted |
| Journal of Biological Regulators & Homeostatic Agents 46 | MEDLINE | Corrupted peer review process | Italy | Retracted |
| Annals of Internal Medicine 47 | MEDLINE | Findings below the limit of detection thus unreliable | South Korea | Retracted |
| Chinese Journal of Epidemiology 48 | China Academic Literature Database | Concern regarding results and conclusions | China | Withdrawn |
| Practical Preventive Medicine 49 | China Academic Literature Database | Unknown | China | Withdrawn |
| Journal of the American Pharmacists Association 50 | MEDLINE | Publisher’s accidental duplication of another publication in the same journal | USA | Withdrawn |
| Journal of the American Pharmacists Association 51 | MEDLINE | Publisher’s accidental duplication of another publication in the same journal | USA | Withdrawn |
| Travel Medicine and Infectious Disease 52 53 | MEDLINE | Another research team submitted the same case report to another journal | Iran | Withdrawn |
| Engineering 54 | DOAJ; Scopus | Language editing required to improve paper’s clarity | China | Temporarily retracted but returned online |
| Journal of the American Academy of Dermatology 55 | MEDLINE | Unknown | China | Temporarily retracted but returned online |
| American Journal of Obstetrics and Gynaecology 56 | MEDLINE | Journal production error in title of manuscript (delete word ‘effective’)57 | Turkey | Temporary removal from journal but returned after correction |
*DRJI (Directory of Research Journal Indexing) is noted to be a ‘misleading metric’ index per https://predatoryjournals.com/metrics/%23D.
DOAJ, Directory of Open Access Journals.