HIV seronegativity in an infant with the acquired immunodeficiency syndrome

J M Quiñonez1, R E Begue, R W Steele

  • 1Louisiana State University School of Medicine and Children's Hospital, New Orleans, USA.

Southern Medical Journal
|September 22, 1998
PubMed

Insights

Infants can have human immunodeficiency virus (HIV) infection without detectable antibodies. Diagnosis requires methods like DNA polymerase chain reaction (PCR) when screening tests are negative, especially in cases of opportunistic infections.

Area of Science:

  • Pediatrics
  • Infectious Diseases
  • Virology

Background:

  • Human Immunodeficiency Virus (HIV) infection in infants presents unique diagnostic challenges.
  • Serological tests like ELISA and Western blot are standard for HIV diagnosis but can be negative in early or atypical cases.

Observation:

  • A case of an infant with progressive HIV infection and Pneumocystis carinii pneumonia is presented.
  • The infant remained seronegative for HIV-1 and HIV-2 antibodies until 10 months of age, despite documented HIV-1 infection via DNA polymerase chain reaction (PCR).

Findings:

  • This case highlights the existence of seronegative HIV infection in infants.
  • HIV-1 DNA PCR confirmed infection earlier than serological antibody tests.

Implications:

  • Clinicians should consider seronegative HIV infection in infants presenting with opportunistic infections, even with negative antibody screening.
  • Diagnostic approaches should include molecular (PCR) and antigen-based tests when serology is inconclusive to ensure timely diagnosis and treatment.

Related Concept Videos

Retrovirus Life Cycles01:10

Retrovirus Life Cycles

Retroviruses have a single-stranded RNA genome that undergoes a special form of replication. Once the retrovirus has entered the host cell, an enzyme called reverse transcriptase synthesizes double-stranded DNA from the retroviral RNA genome. This DNA copy of the genome is then integrated into the host’s genome inside the nucleus via an enzyme called integrase. Consequently, the retroviral genome is transcribed into RNA whenever the host’s genome is transcribed, allowing the retrovirus to...
Development of Immunocompetence01:22

Development of Immunocompetence

The initiation of cell-mediated immunity can be observed as early as the third month of fetal growth, with active antibody-mediated immunity following approximately one month later.
The initial cells that migrate from the fetal thymus settle within the skin and epithelial tissues lining the mouth, digestive tract, and in females, the uterus and vagina. These cells, including skin-based dendritic cells, serve as antigen-presenting cells, playing a key role in T cell activation.
Subsequent T...
Immunodeficiency Diseases01:25

Immunodeficiency Diseases

Immunodeficiency disorders are conditions in which the immune system's ability to fight infectious disease and cancer is compromised or entirely absent. The immune system comprises a complex network of cells, tissues, and organs that work together to protect the body from potentially harmful invaders. When this system is deficient or not functioning properly, it leaves the body susceptible to infections, diseases, or other complications.
There are three main causes of immunodeficiency disorders...
Sexually Transmitted Infections01:26

Sexually Transmitted Infections

Sexually transmitted infections (STIs) are diseases transmitted primarily through unsafe sexual interactions. Bacteria, viruses, or parasites cause them and can result in severe health complications if untreated.ChlamydiaThe bacterium Chlamydia trachomatis is responsible for the disease Chlamydia, the most common STI in the United States. This peculiar pathogen requires human cells to reproduce, residing intracellularly. The initial infection often goes unnoticed because it typically does not...
Respiratory Syncytial Virus Disease01:29

Respiratory Syncytial Virus Disease

Human respiratory syncytial virus (RSV) is a widespread pathogen that primarily targets infants and young children but also poses a serious health risk to elderly and immunocompromised individuals. Belonging to the Pneumoviridae family, RSV is a negative-sense, single-stranded RNA virus within the Pneumovirus genus. Its global health burden is significant, with millions of cases annually resulting in hospitalizations and mortality, particularly in resource-limited settings. Although most...
Inhibitors of Virion Maturation and Assembly01:19

Inhibitors of Virion Maturation and Assembly

As part of their replication cycle, certain viruses synthesize long precursor proteins called polyproteins within infected host cells. In human immunodeficiency virus (HIV), two major polyproteins are produced: Gag and Gag-Pol. The Gag polyprotein supplies the structural components of the virus, while Gag-Pol includes essential viral enzymes such as reverse transcriptase, integrase, and protease. After synthesis, these polyproteins move to the host cell membrane, where they assemble into an...