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DrDean says...

The Center for Disease Control has issued a travel advisory for the Bahamas because of our confirmed Zika cases and the assumption that we are in an epidemic. An epidemic is assumed because few of our population have had previous exposure to the Zika virus.
Countries in Africa where Zika has been around for decades have a large percentage of their population immune to the virus due to previous infections, and thus are considered endemic regions. While sporadic infections will continue to occur, they will not reach epidemic proportions until and unless a sufficiently large enough unexposed population is present to trigger another epidemic. That is one of the reasons we see cyclical Dengue epidemics (Dengue is more complicated because there are four serotypes).
Previous experience with Epidemic Zika and other mosquito borne illnesses such as Dengue and Chikungunya have shown that these epidemics infect 25-65% of a denovo population.
There is no value at this point in counting individual occurrences. It can safely be assumed that thousands have or will be infected during this current cycle.
Vector control is appropriate.
Because of the potential disastrous effects on developing babies, the government should be encouraging women to delay pregnancy during this epidemic phase, and if at all possible for one year.

On Another case of Zika virus is confirmed

Posted 13 September 2016, 3:12 a.m. Suggest removal