Zika just reached 2 more Caribbean islands — here's a map of all the places it has spread so far

The Centers for Disease Control and Prevention added the countries of Antigua and Barbuda as well as the UK Turks and Caicos Islands in the Caribbean to the list of countries and territories with local transmission of the Zika virus

The Zika virus is mainly transmitted by mosquitoes. In the last week, it's been identified in the US in the Miami's Wynwood neighborhood, but so far that's the only area in the continental US with locally-transmitted Zika. Once infected, only about 20% of people ever show symptoms, which most commonly include fever, rash, joint pain, and red eyes. There is no vaccine or treatment available for the virus.

One reason Zika is troubling is that it is a cause of birth defects, including microcephaly — a condition where the baby's head is abnormally small — in babies whose mothers have had Zika. The virus has also been linked to a neurological condition called Guillain-Barré syndrome.

Here are all 53 countries and territories where local transmission of the virus has been reported as of August 3 (note: Miami has not been added to this map just yet, although there has been reported Zika virus transmission via mosquito):

BI Graphic_Zika Virus Map And List (5)

(Dragan Radovanovic/Business Insider)

To show just how rapidly this virus had gained a foothold in the Americas, we created a GIF displaying all of the places that the Zika virus has spread through local transmission since the start of the outbreak:

BI Graphic_Zika Virus Spread Map (6)

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