Date of Defense:
June 2, 2015
Giardia is one of the most common intestinal pathogens identified in international adoptees coming to the United States, and it can be spread from adoptees to their contacts after adoption. It is important to better understand the epidemiology of Giardia infections in this population. This pilot study reviewed data from January 1, 2013 through December 31, 2014 from the Minnesota Department of Health’s giardiasis surveillance, to characterize giardiasis in international adoptees coming to Minnesota. These cases were compared to giardiasis cases acquired domesti cally during the same time period in children of comparable ages. There were 52 international adoptee cases and 100 comparison cases. During FY 2014, 12% of the international adoptees coming to Minnesota tested positive for Giardia. Adoptees were significa ntly less likely than comparison cases to report cramps, appetite loss, and weight loss; the two groups did not differ significantly in the percent reporting diarrhea, fever, or vomiting. The median length of time from the arrival date to the specimen coll ection date for the adoptees was 27 days (range 2 to 191 days). The median length of time from symptom onset to specimen collection date for the comparison cases was 15 days (range 0 to 2487 days). Ninety – eight percent of the adoptees and 93% of the compar ison cases were treated for their Giardia infection. One transmitted case of giardiasis was identified in an adoptee’s family member. In the future, it will be important to continue improving resources about Giardia for families and healthcare providers of international adoptees.