What is the fine-grained topic of the following text: A joint effort of Deafblind International, Sense International UK and Sense International (Romania), the event will bring together around 500 participants from all over the world including specialists in the field of education, health, social services, people with deafblindness and their families, representatives of non-governmental organisations, and national and local authorities. Only return the topic.
An international event on deafblindness