April 7 is World Health Day The World Health Organisation (WHO) Friday called for strengthening the health system across India to address the threat of vector-borne diseases like dengue and malaria. 'The World Health Day campaign 'small bite: big threat' brings renewed focus on sustainable control elimination and eradication of vector-borne diseases' WHO representative to India Nata Menabde said at a national consultation organised by the health ministry and the WHO. 'It is only through strengthening of health systems with effective stewardship enhanced collaboration across agencies sectors and all levels of government and implementation of regulatory mechanisms that the challenge