High frequency of parvovirus B19 in patients tested for rheumatoid factor

High frequency of parvovirus B19 in patients tested for rheumatoid factor.

Frequency of human Parvovirus B19 among patients with respiratory infection in Iran

Background: Human parvovirus B19 was known as one of the possible cause of mild respiratory tract diseases in previous studies. However, there are some reports of acute obstructive respiratory disease and severe pneumonia. The purpose of current study was to assess the prevalence and clinical features of parvovirus B19 in respiratory infection.    Methods: This study was conducted on...

Frequency and significance of parvovirus B19 infection in patients with rheumatoid arthritis

The present study aims to clarify the possible involvement of parvovirus B19 (B19V) infection in rheumatoid arthritis (RA) pathogenesis by investigating the presence of B19V infection markers (genomic sequences and virus-specific antibodies) in association with the level of cytokines and RA clinical activity and aggressiveness. A total of 118 RA patients and 49 age- and sex-matched healthy volu...

Rheumatoid arthritis after human parvovirus B19 infection.

Polyarthropathy associated with human parvovirus B19 (B19) is usually transient, but often resembles rheumatoid arthritis (RA). However, B19 DNA screened by polymerase chain reaction (PCR) may be positive not only in autoimmune diseases, but also in non-arthropathy. To study whether or not RA occurs after acute B19 infection, we conducted a prospective study of patients with acute onset polyart...

Parvovirus B19 Infection Frequency in Placenta of Fetal Loss Cases in Children Medical Center, Tehran, Iran

  Background and Objectives: Infection with parvovirus may induce spontaneous abortion, non-immune hydrops fetalis, and intrauterine death in full term infants. The aim of this study was to determine the frequency of parvovirus B19 in paraffin-embedded formalin fixed placental tissues in lost fetuses by PCR method and comparison with its frequency in healthy full term neonates as controls. Ma...