If Irma stays on its current track as a category 5 hurricane, it will bring devastating damage within hours to parts of the Caribbean, affecting the lives of hundreds of thousands of children, the United Nations Children's Fund, UNICEF, today cautioned.

"Although it is still early to know the full impact that Irma will have in the region, the main concerns of UNICEF centre around the supply of drinking water and food, and the health and protection of children and adolescents," the UN agency said in a statement.

UNICEF's office in the region has activated its emergency protocols and is working with government officials in Antigua and Barbuda, Dominica, St. Maarten, St. Kitts and Nevis, and the Virgin Islands, as well as the Dominican Republic, Haiti and Cuba, which the hurricane is projected to hit next.

Supplies of drinking water, unperishable food and medicines, and emergency kits are pre-positioned and ready for distribution in the most affected communities, UNICEF said.

The agency also activated its U-Report platform, which allows it to send urgent messages via Facebook and other social media platforms to young people who subscribed.

According to recent information, Irma has become "the most dangerous natural phenomenon" in the region this year.