Mumbai's iconic 5,000 dabbawalas Monday delivered WHO messages on prevention and control of vector-borne diseases along with their lunch boxes to mark the World Health Day Monday, an official said.

The specially-created tags went with around 200,000 tiffin boxes to hungry customers across the city creating awareness of the menace of mosquitoes and the "big threat of small bites" in a bid to motivate people to protect themselves and their families.