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Updated: Aug 14, 2026

Sequencing of Bacterial Microflora in Peripheral Blood: our Experience with HIV-infected Patients
Published on: June 11, 2011
Acute retroviral disease masquerading as bacterial sepsis: the "bands" play on
M Flemmer1, E C Oldfield, B H Melek
1Department of Medicine, Eastern Virginia Medical School, Norfolk, VA 23507, USA.
Abstract:
We describe a case of acute human immunodeficiency virus infection that initially appeared to be bacterial sepsis. A marked increase in band forms was seen in the peripheral blood of our patient, with no increase in atypical lymphocytes. Having reviewed the most recent literature, we find this to be common, particularly in the first few days of acute retroviral illness. We suggest that the absence of atypical lymphocytes in the peripheral blood can be misleading in some cases and may militate against the primary diagnosis of acute retroviral disease.
Insights
Acute human immunodeficiency virus infection can mimic bacterial sepsis, with increased band forms but no atypical lymphocytes. This presentation is common in early stages and can delay diagnosis of acute retroviral illness.
Area of Science:
- Infectious Diseases
- Hematology
Background:
- Acute human immunodeficiency virus (HIV) infection is the earliest stage of HIV disease.
- Early diagnosis is crucial for timely treatment and preventing transmission.
Observation:
- A case presented with symptoms initially suggestive of bacterial sepsis.
- Peripheral blood analysis revealed a marked increase in neutrophil band forms.
- Notably, there was an absence of atypical lymphocytes in the peripheral blood smear.
Findings:
- The observed pattern of increased band forms without atypical lymphocytes is a common finding in the initial days of acute retroviral illness.
- This hematological presentation can be misleading, potentially masking an underlying acute HIV infection.
Implications:
- Clinicians should consider acute HIV infection in the differential diagnosis of patients presenting with sepsis-like symptoms and specific peripheral blood findings.
- The absence of atypical lymphocytes should not rule out acute retroviral disease, emphasizing the need for broader diagnostic considerations.
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