At least 31 people in Connecticut have been diagnosed as carrying the Zika virus, but all of them are believed to have contracted the virus while traveling in Caribbean nations or in Latin and South America. The Asian tiger mosquito, or Aedes albopictus, is present in Connecticut and is capable of transmitting the Zika virus. But more than 90,000 tests on mosquitoes in this state have so far failed to detect the Zika virus in any of the Connecticut insects.