Clinical Differences between COVID-19 and a COVID-Like Syndrome

Area of Science:

• Infectious Diseases
• Pulmonology
• Occupational Health

Background:

• Coronavirus disease (COVID-19), caused by SARS-CoV-2, presents with typical pneumonia but also atypical symptoms.
• Hospital workers face increased COVID-19 infection risk and may exhibit COVID-like symptoms despite negative nasopharyngeal swabs (NPS).
• Distinguishing these COVID-like syndromes with repeated negative NPS from typical COVID-19 is challenging in clinical practice.

Purpose of the Study:

• To report findings on patients with a COVID-like syndrome.
• To compare this cohort with patients diagnosed with typical COVID-19.
• To provide clarity on differentiating these conditions in healthcare settings.

Main Methods:

• Retrospective analysis of a cohort of patients presenting with COVID-like symptoms.
• Comparison group comprised patients with confirmed COVID-19.
• Evaluation of nasopharyngeal swab (NPS) results and serological antibody testing.

Main Results:

• A subset of hospital workers presented with COVID-like symptoms and repeated negative NPS.
• These patients often tested positive for SARS-CoV-2 antibodies, suggesting prior infection.
• Clinical management differs significantly between repeated negative NPS and single false negative cases.

Conclusions:

• A distinct COVID-like syndrome, particularly in hospital workers, is possible despite negative NPS.
• Serological testing may be crucial for identifying SARS-CoV-2 infection in such cases.
• Further research is needed to establish clear diagnostic criteria and clinical guidelines.