The US Virgin Islands' Department of Health has confirmed four additional cases of the Zika virus in St Croix, bringing the total to 11 cases.
No new case of dengue was reported this week, with seven confirmed so far.
The Department of Health says it is also continuing to test pregnant women who show no symptom of Zika.
As of this week, 358 samples have been taken from pregnant women, of those, 225 results are pending.