MEXICO CITY, Mexico - Dengue cases have created an "emergency situation" in the Americas, although cases in hotspots Argentina and Brazil appear to have stabilized, the head of the Pan American Health Organization said on Thursday.PAHO, a United Nations agency, has confirmed more than 5.2 million cases of dengue across the Americas this year, an over 48% jump from the 3.5 million cases the group reported late last month.
The countries so far hit the hardest in the current outbreak, Argentina and Brazil, "still have a very strong transmission," Barbosa said, adding that "in recent weeks there seems to be a stabilization, or even a reduction" in the countries' cases.Barbosa warned that supply of an existing dengue vaccine is "very limited" and even widespread vaccination would not have an immediate impact on interrupting the ongoing outbreak.