On 6 to 8 December 2016, the Vietnam Red Cross Society, in collaboration with the International Federation of Red Cross and Red Crescent Societies organized a mosquito-borne diseases workshop for Red Cross health workers from four National Societies of Cambodia, Laos, Thailand and Vietnam. The workshop, which was supported by the Finnish and New Zealand Red Cross Societies, focused on improving the participants’ knowledge around vector-borne diseases and exploring solutions to issues faced by the health workers in their respective communities. The workshop was also an opportunity to pilot the Zika, Dengue and Chikungunya Prevention Toolkit recently developed by the IFRC.