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Biomedical subjects

K Gunasekaran

Publications and source records attributed to K Gunasekaran.

50 records · Page 3Linked to original sources
PubMed1990

Seasonal prevalence and resting behaviour of malaria vectors in Koraput district, Orissa.

Among the seven vector species studied A. fluviatilis, A. jeyporiensis and A. maculatus were exophilic whereas A. aconitus, A. annularis, A. culicifacies and A. varuna were endophilic. All the species collected indoors preferred cattlesheds to human dwellings for daytime resting and 71.3% of the total indoor collection was obtained from cattlesheds. Among the outdoor shelters pit shelters were found to be most attractive for all anophelines resting outdoors. In human dwellings anophelines generally preferred to rest on walls during winter and summer but on ceilings during the rainy season. While A. culicifacies has two peaks in density, during June-July and March all the other species had only one peak. There was a general decline in the density of vectors observed earlier in this area.

Animals↗
PubMed1990

Parasitological aspects of malaria persistence in Koraput district Orissa, India.

A sample survey in 37 villages covering 10,733 people in 1986-87 in the Koraput district, Orissa showed that the malaria prevalence is of a much higher order than that reported by the National Malaria Eradication Programme (annual parasite incidence between 14.3 and 26.8 during 1981-86). Out of 833 positives detected 714 had Plasmodium falciparum, 86 had P. vivax, 12 had P. malariae and 21 had mixed infections. There were 650 asymptomatic parasite carriers and 127 gametocyte carriers. The infant parasite rate was 15.82 per cent and average enlarged spleen (AES) in 2 to 9 yr old children was 1.98. In a year round fever survey in 22 villages, 5520 blood smears were collected and 1364 were found positive for malaria, with 77.3 per cent P. falciparum. In a mass blood survey conducted in a labour camp at an irrigation project, 610 people were examined, and 181 were positive. Nearly 40 per cent of migrants and 22 per cent of locals were positive, P. falciparum being dominant.

Age Factors↗
PubMed1989

Lymphatic filariasis in Madras, India.

This study examines the state of mosquito-borne lymphatic filariasis in Madras, Tamil Nadu, in southern India during the 1970s and into the 1980s. In its various forms it remains a public health problem of considerable magnitude in many tropical countries and affects both rural and urban populations [1. World Health Organization (Third Report). Expert Committee on Filariasis. Tech. Rep. Ser. No. 542, p. 7, 1974]. Here problems of delimiting the spatial extent of morbidity in Madras are discussed and sample survey data are examined which suggest that the disease is prevalent throughout the city to varying extents and that community health education is still inadequate.

Adolescent↗
PubMed1989

Malaria & other common ailments among upper Bonda tribals in Koraput district, Orissa.

A malariometric survey carried out among the upper Bonda tribals of Koraput district showed that malaria is the major cause of morbidity followed by worm infestation and malnutrition. A total of individuals 1,409 (32.2% of the population) were sampled and 771 were found positive for malaria parasites. Plasmodium falciparum was the predominant parasite (73.7%) followed by P. vivax (10.6%) and P. malariae (5.2%) among the positive cases. Mixed infection was observed in 10.5 per cent of positive individuals. The infant parasite rate was 60.0 per cent and the average enlarged spleen among the children between 2-9 yr was 2.11. The age specific parasite rate indicated high degree transmission and high level of acquired resistance among the tribals.

Adolescent↗
PubMed1989

Anopheline fauna of Koraput district, Orissa state, with particular reference to transmission of malaria.

The anopheline fauna was surveyed in Koraput district of Orissa, which is highly malarious. A total of 62,086 anophelines belonging to 22 species and two varieties were collected, including eight species of anophelines which are recognized malarial vectors in India. Anopheles sergenti, A. pulcherrimus, A. jeyporiensis var candidiensis and A. annularis var adiei was recorded for the first time in this area. A total of 24154 mosquitoes were dissected and 18 mosquitoes belonging to four species, A. fluviatilis. A. annularis, A. culicifacies and A. aconitus were found with the gut/gland infection.

Animals↗
PubMed1986

Population movement and malaria persistence in Rameswaram Island.

The role of population movement on the persistent transmission of malaria in Rameswaram Island was studied. Majority of the inhabitants of the island are fishermen, who engage in perennial fishing. They move from one coastal place to the other for fishing and stay in temporary camps depending on season and fish availability. Such seasonal fishing camps attract fishermen from the mainland coastal villages also. The parasitological and entomological studies carried out in these places reveal that some of the camps are highly vulnerable to the movement of individuals with malaria infection and highly receptive. Rameswaram being a holy place, receives pilgrims from all over India and Nepal. Plasmodium falciparum cases recorded from the pilgrims of North India indicate the danger of the possible introduction of chloroquine-resistant parasite in the island. Also, a large number of passengers in transit from various countries, many of which are at risk of malaria transmission, stay in the island before or after visiting Sri Lanka. Such population movements being a continuous and regular feature are significant and result in failures in the operational programmes.

Anopheles↗