Q fever and early pregnancy failure: a Scottish case-control study

Area of Science:

• Infectious Diseases
• Obstetrics and Gynecology
• Epidemiology

Background:

• Q fever is a zoonotic bacterial infection with implications for human health.
• Previous associations between Q fever and pregnancy complications, including miscarriage, have been noted.

Purpose of the Study:

• To determine if Q fever exposure correlates with miscarriage in women attending a pregnancy support unit in Edinburgh.
• To assess the prevalence of Q fever antibodies in women experiencing miscarriage versus a control group.

Main Methods:

• A case-control study involving 369 women.
• Participants were divided into a miscarriage group (251 women) and a control group (118 women).
• Serological testing for Q fever antibodies was performed.

Main Results:

• Three women tested positive for Q fever antibodies, indicating prior exposure.
• All positive cases were identified within the miscarriage group.
• Q fever antibodies were not detected in the control group.

Conclusions:

• Q fever appears to be relatively rare in this urban Scottish population.
• The findings suggest Q fever is not a major cause of miscarriage overall in this cohort.
• However, Q fever cannot be excluded as a potential cause of miscarriage in individual cases due to its presence in the miscarriage group.