Malaria: Past, present and future
International Journal of Infectious Diseases
rainfall, humidity are negatively correlated with malaria incidence (Figure 3 ). Conclusion: The proposed early warning system is developed for continuous monitoring of information related to climatic change and public health as they unfold. These systems are in most instances, timely surveillance systems that collect information on epidemic prone diseases in order to trigger prompt public health interventions. Developing countries like India needs effective surveillance system and equity in
... lth delivery programs for taking corrective actions to improve health conditions of vulnerable populations. Abstract: Malaria has always exerted a heavy toll on mankind. At the turn of the 20 th century millions died each year in India alone. No other infectious disease has had more impact on the human genome, particularly in tropical regions. In the past 150 years malaria has been first controlled and then eliminated in Europe, North America and Russia. This was achieved mainly by a dual attack on the malaria vector -the anopheline mosquito, and the malaria parasite in the human host. The successes in temperate regions led to a global eradication effort endorsed by the World Health Assembly in 1955. The campaign was armed with an effective insecticide, DDT, and an excellent new antimalarial drug, chloroquine. However by 1969 it was acknowledged that the ambitious goal of global eradication could not be achieved. Over the next three decades many of the successes of the eradication effort were reversed and malaria resurged across the tropical world. The resurgence was associated with resistance to the available insecticides and to the available antimalarial drugs. The tide has turned again over the past 15 years with substantial increases in international support for malaria control activities, widescale deployment of insecticide treated mosquito nets, and the belated introduction of highly effective artemisinin combination treatments for uncomplicated malaria and artesunate for severe malaria. Global malaria mortality and morbidity have fallen substantially. Malaria eradication is now back on the agenda. The challenges now are how to maintain the political and financial support for malaria control and elimination as case numbers fall, to reach those areas where control activities are still weak, to address seriously control of P. vivax, and to overcome two looming familiar threats; insecticide and drug resistance. Resistance to pyrethroids is increasing and resistance to artemisinin in P. falciparum has emerged in South-East Asia, and now extends to the border of India. Artemisinin resistance has not been contained, and combination partner drug resistance has predictably followed. Spread of resistance to Africa would be disastrous. A moderately effective vaccine has been developed and new drugs are in the pipeline, but they will not generally available for years. The future is uncertain. http://dx. Abstract: Flaviviruses are some of the most important causes of encephalitis, and other neurological syndromes globally, and have an ability to spread to new areas causing large outbreaks.