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Volume 32, Number 1—January 2026

Synopsis

Two Cases of Q Fever in Pregnancy, including Management of the Newborn, Australia

Robyn SilcockComments to Author , Robert Horvath, Su May Chew, and Clare Nourse
Author affiliation: Pathology Queensland, Herston, Queensland, Australia (R. Silcock, R. Horvath); Queensland Children’s Hospital, Brisbane, Queensland, Australia (R. Silcock, C. Nourse); University of Queensland, Brisbane (R. Silcock, C. Nourse); Q Fever Interest Group, Brisbane (R. Silcock, R. Horvath, S.M. Chew, C. Nourse); Prince Charles Hospital, Brisbane (R. Horvath); Toowoomba Hospital, Toowoomba, Queensland, Australia (S.M. Chew)

Main Article

Table 1

Serologic and PCR monitoring for case 1 during pregnancy, at delivery, and during the first 12 months postpartum in study of Q fever in pregnancy, including management of the newborn, Australia*

Time Maternal phase 2 IgM Maternal phase 2 IgG (IFA) Maternal phase 1 IgG (IFA) Infant phase 2 IgM (EIA) Infant phase 2 IgG (IFA) Infant phase 1 IgG (IFA) Infant blood PCR Maternal blood PCR Breastmilk PCR
10 weeks’ gestation
 Neg
 <10
 –
 –
 –
 –
 –
 Detected
 –
29 weeks’ gestation
 320
 5,120
 2,560
 –
 –
 –
 –
 ND
 –
At delivery
 160
 2,560
 1,280
 Neg
 NA
 NA
 ND
 Detected
 ND
6 weeks postpartum
 320
 10,240
 10,240
 Neg
 >1,280
 640
 ND
 ND
 ND
4 months postpartum
 80
 10,240
 10,240
 Neg
 >1,280
 320
 ND
 ND
 ND
7 months postpartum
 80
 20,480
 5,120
 Neg
 160
 40
 ND
 ND
 ND
12 months postpartum 80 20,480 5,120 Neg 80 <10 ND ND ND

*EIA, enzyme immunoassay; IFA, immunofluorescence assay; NA, not available (not tested); ND, not detected; neg, negative

Main Article

Page created: December 15, 2025
Page updated: January 27, 2026
Page reviewed: January 27, 2026
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