Story highlights
- South Korea reveals anti-Zika uniforms
- Clothes infused with mosquito repellent
- Zika virus shown to cause microcephaly in babies
- Rio Olympics start on August 5
South Korea's stars will wear tracksuits which have been infused with insect repellant designed to keep mosquitoes away, as well as long pants and blazers for the opening and closing ceremonies.
Athletes are not allowed to have their actual kit infused but will be able to spray themselves with repellent before competing.
Other nations, such as Germany, have yet to adopt South Korea's approach, instead taking a more casual approach to leisurewear.
Team USA marked 100 days to go with a rather low key ceremony.
Australia unveiled its new range of Olympic uniform in Sydney with the traditional green and gold featuring heavily.
Great Britain, which hosted the Games in 2012, launched its new kit with the help of world and Olympic heptathlon champion Jessica Ennis-Hill.
The Olympics run from August 5-21 with the Paralympics starting on September 7 and concluding on September 18th.