Puerto Rico has more reported cases of Zika than many other places in the region, and the number of cases continues to rise. Unfortunately, Zika is just one of the island's many problems.
The spread of Zika is probably limited by window screens and other mosquito-control measures in common use in the U.S. Also, the primary mosquito that carries Zika has a somewhat limited range.
A team of researchers recently found that mobility patterns revealed by cellphone data let them accurately model the spread of a large dengue outbreak in two regions of Pakistan in 2013.
Researchers set hungry mosquitoes loose on identical and fraternal twins. They found that inherited genes do play a role in making you a mosquito magnet.
The British firm that developed the strain of mosquito says it has already tested the insect in tropical countries and found it can reduce populations of disease-carrying mosquitoes by 90 percent.