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. 2010 Jun 1;201(11):1625-32.
doi: 10.1086/652405.

Frequent and prolonged shedding of bocavirus in young children attending daycare

Emily T Martin  1 , Mary P Fairchok, Jane Kuypers, Amalia Magaret, Danielle M Zerr, Anna Wald, Janet A Englund
Affiliations

Frequent and prolonged shedding of bocavirus in young children attending daycare

Emily T Martin et al. J Infect Dis. .

Abstract

Background: Little is known about human bocavirus (HBoV) persistence and shedding and the association between HBoV detection and the onset and resolution of respiratory symptoms.

Methods: We performed HBoV testing on nasal swab samples from a prospective, longitudinal study of respiratory illness in 119 children who attended daycare.

Results: HBoV was detected in 70 children (59%) and in 106 (33%) of the 318 cases of illness. Another virus was detected in 76 (72%) of 106 HBoV-positive cases. Extended and intermittent shedding was observed, with consistent HBoV detection documented for up to 75 days. HBoV was detected in 20 (44%) of 45 asymptomatic enrollment samples, and HBoV prevalence and viral load did not differ significantly between children with and children without symptoms at enrollment. HBoV-positive illnesses were longer than HBoV-negative illnesses (odds ratio for duration of symptoms >7 days, 2.44; 95% confidence interval, 1.41-4.22), and illnesses with HBoV load 4 log(10) copies/mL required a visit to a health care provider more often than did HBoV-negative illnesses (odds ratio, 1.64; 95% confidence interval, 1.02-2.64).

Conclusion: HBoV was more common in illnesses with greater severity. However, detection of HBoV was not associated with the presence of respiratory illness or with specific respiratory symptoms in this prospective study of infants and toddlers attending daycare centers.

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Conflict of interest statement

Potential conflicts of interest:J.A.E. and M.P.F. have received research funding from MedImmune. J.A.E. has received research funding from Sanofi Pasteur and Novartis. E.T.M. and D.Z. have received research funding from Vioguard. All other authors: no conflicts.

Figures

Table 1.
Table 1.
Characteristics of the Study Population
Figure 1.
Figure 1.
Viruses detected in 318 cases of illness. AdV, adenovirus; CoV, coronavirus; Flu, influenza; HBoV, human bocavirus; HMPV, human metapneumovirus; HRV, rhinovirus; PIV, parainfluenza virus; RSV, respiratory syncytial virus.
Figure 2.
Figure 2.
Extended human bocavirus (HBoV) shedding in 8 children.
Table 2.
Table 2.
Human Bocavirus Incidence by Subgroup
Figure 3.
Figure 3.
Seasonal distribution of illnesses. HBoV, human bocavirus.
Table 3.
Table 3.
Human Bocavirus (HBoV) Prevalence at Enrollment
See this image and copyright information in PMC

Comment in

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