Zika Virus Virtually Eradicated in the U.S. and Has Declined Dramatically in South and Central America

In the summer of 2016, public health experts were on high alert due to the rapid spread of the Zika virus, which has now been proven to cause birth defects and other health problems  in infants. But now as the calendar turns to 2018,Zika is virtually eradicated in the contiguous U.S. and has fallen dramatically in the Caribbean and South America.

Scientists are of mixed views as to what has contributed to the decline. While there has been a dedicated effort to improve mosquito spraying and even breeding of mosquitos to compete with Zika-carrying mosquitos , this article postulates that the decline is most likely due to a”herd immunity” phenonemenon. Meanwhile several efforts are underway at developing a vaccine, expected later this year.



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