<Li> to make blood pressure measurement affordable to all; </Li> <Li> to incite national and local authorities to create enabling environments for healthy behaviours . </Li> <P> World Health Day 2014 put the spotlight on some of the most commonly known vectors--such as mosquitoes, sandflies, bugs, ticks and snails--responsible for transmitting a wide range of parasites and pathogens that can cause many different illnesses . Mosquitoes, for example, transmit malaria--the most deadly vector - borne disease, causing an estimated 660 000 deaths annually worldwide--as well as dengue fever, lymphatic filariasis, chikungunya, Japanese encephalitis and yellow fever . More than half of the world's population is at risk of these diseases . </P> <P> The goal of the World Health Day 2014 campaign was better protection from vector - borne diseases, especially for families living in areas where diseases are transmitted by vectors, and travelers to countries where they pose a health threat . The campaign advocated for health authorities in countries where vector - borne diseases are a public health problem or emerging threat, to put in place measures to improve surveillance and protection . </P>

Who marked year 2017 with the theme of