Travelers should stay informed about Zika and other mosquito-borne diseases and, if in doubt, ask their local health and travel authorities. Based on the available evidence, WHO does not recommend any travel or trade restrictions for Zika virus disease. Some countries have reported sporadic cases of Zika virus infection in travelers returning from affected countries, but the risk of further transmission, if any, is small. As a precautionary measure, some governments may make public health and travel recommendations for their own populations based on their own assessment of available evidence and local risk factors. Preventive measures for pregnant women and women considering pregnancy Based on the latest evidence that Zika virus infection during pregnancy may be associated with microcephaly in newborns, WHO has issued further preventive travel recommendations for pregnant women and their sexual partners. Pregnant women should discuss their travel plans with their health care provider and consider postponing travel to any area where locally acquired Zika virus infection occurs. Zika virus is transmitted through mosquitoes, not person-to-person contact, although a few cases of sexual transmission have been documented. Zika virus has now been found in human semen. Two reports have addressed cases of human-to-human transmission of Zika virus through sexual contact. Until more is known about the risk of sexual transmission, all men and women returning from areas of Zika virus transmission, especially pregnant women and their partners, should practice safe sex, including the consistent and proper use of condoms. All travelers to areas where locally acquired Zika virus infection occurs, including pregnant women, should strictly follow measures that can prevent mosquito bites during travel, including: Use of insect repellents: Insect repellents can be applied to exposed skin or sprayed on clothing and should contain mosquito repellent (DEET). Wear clothing that covers as many body parts as possible (preferably light-colored clothing); use physical barriers such as screens and tightly closed windows and doors; sleep under a mosquito net, especially during the day when Aedes mosquitoes are most active; identify and remove potential mosquito breeding sites; empty, clean or cover containers that may hold water, such as buckets, flower pots or car tires. Cover them.