Summer’s end in the Northern Hemisphere, signaled by the September Equinox, heralds cooler Fall temperatures in the North, but warming Springtime in the Southern Hemisphere, …and the season for breeding grounds of the Zika-carrying mosquito, the Aedes aegpyti.

ZikaZoneUSA shows shrinking areas in the USA that are ripe for the mosquitoes to breed, bite and transmit the Zika virus.

(ZikaZoneUSA potential environmentally ripe conditions shown week ending September 29, 2016)

Yet, as the Southern Hemisphere begins to warm with its approaching Spring, areas where the Aedes aegypti mosquito can thrive will grow below the Equator.

Travel-related infection accounts for most of the Zika cases in the USA. As the areas of potential mosquito-borne virus transmission shrinks in the USA, the threat of sexual transmission increases. In a sense, humans become a “vector” to the virus because, unfortunately, Zika is both a vector-borne disease, and also a STD. As North-South travel continues, so will the spread of travel-related Zika.

Per the Center for Disease Control and Prevention

CDC has updated its interim guidance for persons with possible Zika virus exposure who are planning to conceive and interim guidance to prevent transmission of Zika virus through sexual contact, now combined into a single document. CDC now recommends that men with possible Zika virus exposure, regardless of symptom status, wait at least 6 months from symptom onset (if symptomatic) or last possible exposure (if asymptomatic) before attempting conception with their partner. They should also wait at least 6 months beforehaving condomless sex to minimize their risk for sexual transmission of Zika virus to partners.

To protect your growing family, follow the guidance from the CDC. To determine if you are in an area wherein the Zika virus has a potential to thrive, check


  • The map shows the areas where up-to-date conditions favor the prolonged survival of the key mosquito that transmits Zika, the Aedes aegypti.
  • Aedes aegypti mosquitoes have adapted to live and build colonies in close proximity to humans, thereby increasing mosquito to human transmission potentials.
  • The maps offer public health officials the opportunity to be aware of the potential for the spread of mosquitos in their area so they can take action.
  • maps areas where the recent climate conditions are optimal to induce the mosquito to become active, breed and bite.
  • Public health officials can use the maps to make informed decisions on the need to survey for the key mosquito that transmits Zika, the Aedes aegypti and take preventative actions.