ArticleMalaria journal2017
Malaria epidemiology in an area of stable transmission in tribal population of Jharkhand, India.
Article in Malaria journal, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.
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15 citing papers in PubMed, 1 synthesis or guideline pooled it, 25 citations in OpenAlex.
- The prevalence of tuberculosis and malaria in minority indigenous populations of South- East Asia and the Western Pacific Region: a systematic review and meta-analysis.Pathogens and global health · 2022Pooled it
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- Human blood neutrophils generate ROS through FcγR-signaling to mediate protection against febrile P. falciparum malaria.Communications biology · 2023Article
- A novel statistical framework for exploring the population dynamics and seasonality of mosquito populations.Proceedings. Biological sciences · 2022Article
- Neutrophils dominate in opsonic phagocytosis of P. falciparum blood-stage merozoites and protect against febrile malaria.Communications biology · 2021Article
- Human exposure to zoonotic malaria vectors in village, farm and forest habitats in Sabah, Malaysian Borneo.PLoS neglected tropical diseases · 2020Article
- Climate based malaria forecasting system for Andhra Pradesh, India.Journal of parasitic diseases : official organ of the Indian Society for Parasitology · 2020Article
- Is Malaria an Important Cause of Death among Adults?The American journal of tropical medicine and hygiene · 2020Article
- Peripheral Merozoite Surface Proteins Are Targets of Naturally Acquired Immunity against Malaria in both India and Ghana.Infection and immunity · 2020Article
- Biology and bionomics of malaria vectors in India: existing information and what more needs to be known for strategizing elimination of malaria.Malaria journal · 2019Review
- Hospital-derived antibody profiles of malaria patients in Southwest India.Malaria journal · 2019Article
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Authors and funding
13 authors at 7 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundMalaria remains an important health problem in India with approximately 1 million cases in 2014. Of these, 7% occurred in the Jharkhand state mainly in the tribal population.
methodsThis study was conducted in Dumargarhi, a tribal village about 42 km east of Ranchi city, Jharkhand, from May 2014 to September 2016. Four point prevalence surveys were carried out during consecutive high (October-December) and low (June-August) transmission seasons. Malaria cases were recorded from April 2015 to April 2016 through fortnightly visits to the village. Adult mosquito densities were monitored fortnightly by manual catching using suction tube method.
resultsThe study area consists of five hamlets inhabited by 945 individuals living in 164 households as recorded through a house-to-house census survey performed at enrollment. The study population consisted predominantly of the Munda (n = 425, 45%) and Oraon (n = 217, 23%) ethnic groups. Study participants were categorized as per their age 0-5, 6-10, 11-15 and >15 years. There were 99 cases of clinical malaria from April 2015 to April 2016 and all malaria cases confirmed by microscopy were attributed to Plasmodium falciparum (94 cases) and Plasmodium vivax (5 cases), respectively. During the high transmission season the mean density of P. falciparum parasitaemia per age group increased to a peak level of 23,601 parasites/μl in the 6-10 years age group and gradually declined in the adult population. Malaria attack rates, parasite prevalence and density levels in the study population showed a gradual decrease with increasing age. This finding is consistent with the phenomenon of naturally acquired immunity against malaria. Three vector species were detected: Anopheles fluviatilis, Anopheles annularis, and Anopheles culicifacies. The incoherence or complete out of phase pattern of the vector density peaks together with a high prevalence of parasite positive individuals in the study population explains the year-round malaria transmission in the study region.
conclusionsThe collection of clinical data from a well-characterized tribal cohort from Jharkhand, India, has provided evidence for naturally acquired immunity against malaria in this hyperendemic region. The study also suggests that enforcement of existing control programmes can reduce the malaria burden further.
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