JE is closely associated with the pattern of precipitation, flooding and rice production systems. Analysis of trends and influencing factors will help in designing suitable strategies for the prevention and control of JE in the country. Continuous monitoring of vector populations and JE virus infection rates in vector mosquitoes will help in predicting an outbreak and in taking effective intervention measures.

Abstractobjective Until 2010, no Japanese encephalitis (JE) had been reported from Delhi. Upon report of four confirmed cases of JE in September 2011, detailed investigations were carried out to determine whether the cases were imported or indigenous.methods Entomological surveys were carried out and all mosquito pools were tested for the detection of JE virus by ELISA method using specific monoclonal antibody. Human blood samples from contacts of the patients were tested by IgM-captured ELISA method. Pig's blood samples were also tested for the detection of JE virus.results Culex tritaeniorhynchus, Culex vishnui and Culex pseudovishnui mosquitoes were found. In contrast to rural areas, their breeding habitats were different in the city. 19 pools were tested. JE virus was detected in two pools of Cx. tritaeniorhynchus females reared from field-collected larvae, indicating vertical transmission. One pool of Cx. vishnui was also positive. This is the first report for the detection of JE virus in mosquitoes from Delhi. JE IgM antibodies in five contacts/residents indicate recent infection. JE virus was also detected in pigs.conclusion Present analysis shows that of four reported JE cases, three were confirmed indigenous, indicating that the virus is multiplying in the city. Mapping of infected JE vector mosquitoes in the cities is required for preventive measures to contain further spread of the disease.

Summaryobjective To report dengue virus and its disease transmission in Aedes albopictus in the National Capital Territory of Delhi, India. conclusion This is the first report of dengue virus in Ae. albopictus from north India. Because DENV was detected in Ae. albopictus, which adapted to manmade containers, both its spread and transmission dynamics should be checked.

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In India, a National Framework for Malaria Elimination (NFME) has been developed and launched on 11 February 2016 align with the Global Technical Strategy (GTS) for malaria elimination 2016-2030. Malaria elimination will be carried out in a phased manner. In accordance with the NFME, National Strategy Plan for malaria elimination 2017-2022 has been developed by National Vector Borne Disease (NVBDCP), MoH & FW, Govt. of India in collaboration with WHO Country Office India and launched in July 2017. The country has made significant improvement in the malaria situation in recent years. Reported malaria cases were reduced by 49 % and deaths by 50% in 2018 compared to 2017. However, India and ten countries in Africa contribute approximately 70% of the world’s malaria cases and deaths. These countries adopted the “High Burden to High Impact (HBHI) approach”. HBHI has four response elements: (i) Political will to reduce malaria deaths; (ii) Strategic information to drive impact, (iii) Better guidance, policies and strategies, and (iv) A coordinated national malaria response. India has adopted this approach in May 2019 to further accelerate and sustain the progress in the states with high malaria burden. Initially, HBHI approaches are being adopted by NVBDCP with the support of WHO in four high burden states namely Jharkhand, Chhattisgarh, West Bengal and Madhya Pradesh. During the first phase, an in-depth situation analysis on malaria in these states have been conducted using the tools provided by WHO. Key features of adaptation of HBHI approaches in India and detail analysis of one state Madhya Pradesh are presented in the article.