Skip to content
Subscriber Only

Don't Count on Winter to Save Us From Zika

Mosquitoes can transmit the virus in eggs, a new study has found.
Aedes aegypti mosquito larvae.

Aedes aegypti mosquito larvae.

Photographer: Marvin Recinos/AFP via Getty Images

Mosquitoes can pass the Zika virus along to future generations in their eggs, researchers have found. That means winter may not stop Zika's spread.

Infected female mosquitoes can transmit the virus along to their offspring, according to a new study published in the American Journal of Tropical Medicine and Hygiene. That means that even once it gets too cold or dry for adult mosquitoes, their eggs—which can easily survive the dry season or winter—can hatch the next spring when it rains, producing Zika-infected larvae that grow into infected mosquitoes.