Map of Simcoe Muskoka

Pregnancy and Before

Infections in Pregnancy

Types of Infection

A growing fetus is protected in the womb from many bacteria and viruses during pregnancy. However, some infections can still be spread to the infant during pregnancy or during birth.

Group B Streptococcus is a common bacteria that is readily treated with antibiotics and is not normally serious for a woman. However, if passed on to the newborn during delivery, it can cause severe infections, and sometimes death. Other infections that can impact the health of the pregnant woman or baby can include urinary tract infections, sexually transmitted infections and vaccine preventable diseases, such as flu, chickenpox and rubella.

For more information on sexually transmitted infections and bloodborne viruses, please visit the Sexual Health section of the health unit’s website or our local disease statistics.

For more information of vaccine preventable diseases or immunizations, please visit the Immunization section of the health unit’s website.


In 2014, approximately 1 in 5 (20.7% (19.6%, 21.9%)) pregnant women reported an infection during their pregnancy in Simcoe Muskoka. Older pregnant women reported fewer infections during pregnancy than younger mothers, although the difference was not significant. 


Types of Infection

In 2014, the most commonly reported infection in pregnant women in Simcoe Muskoka was Group B Streptococcus, making up nearly half (44.0% (41.0%, 47.1%)) of the reported infections. Urinary tract infections (UTIs) and sexually transmitted infections made up 11.7% (9.8%, 13.7%) and 8.4%. (6.8%, 10.2%) of the infections, respectively. Approximately 4% (4.3% (3.2%, 5.7%)) of the reported infections were seasonal influenza. Less than 2% of infections were blood borne, including hepatitis and HIV.