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J Clin Microbiol. 1989 December; 27(12): 2647-2651

Polymerase chain reaction assay of parvovirus B19 DNA in clinical specimens.

Virus Reference Laboratory, Central Public Health Laboratory, London, United Kingdom.

ABSTRACT

The polymerase chain reaction (PCR) was used to detect parvovirus B19 DNA in a panel of sera from individuals recently infected with B19, as demonstrated by the presence of anti-B19 immunoglobulin M. Of 95 serum samples, 60 (63%) were found positive by PCR, whereas only 1 was also found positive by dot hybridization. In a control panel of 100 serum samples from individuals with other infections, only 1 serum sample was found positive by PCR, and this was also found positive by dot hybridization. This was probably just a fortuitous discovery of viremia. Placental tissues from women (n = 89) who had proven B19 infections in pregnancy but who gave birth to healthy infants at term were also tested. A total of 74 (83%) were found positive for B19 DNA by PCR. The high rate of detection by PCR probably represents "decay" of viral DNA after the peak of viremia and is not a clinically significant phenomenon.

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