In order to ascertain the disaster vulnerability and health risks of flood in Hooghly district of West Bengal, this community based study was conducted through record analysis, interview of concerned authorities and household survey of morbidities before and after flood. Two blocks, with most of its population, were found to be the worst affected among all the disaster vulnerable blocks of the district. Incidence of diarrhoea, other enteric diseases and respiratory infections were significantly higher (P < 0.05) among the population in flood affected blocks, compared to the unaffected. The attack rate of diarrhoea in the flood affected population had increased significantly following flood (P < 0.05).

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Serum samples from 107 goats, 40 sheep, 50 cows were tested for Toxoplasma gondii antibody by indirect haemagglutination test (IHA) in dilutions of 1:10, 1:54, 1:162 and 1:486. Toxoplasma gondii-antibodies were found in 21 (19.6%), 10 (25%), 26 (52%), goat, sheep and cow sera respectively. No serum sample showed a titre higher than 1:162. All animals were kept in good hygienic condition. These results indicate that Toxoplasma gondii antibodies are widespread in animal populations which supports that toxoplasmosis is a widely spread zoonotic infection in this country.

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To ascertain the risk factors of Acute Respiratory Infections (ARI) in children, a prospective study was conducted for a period of one year among 112 underfives in urban slum community of Calcutta. Incidence of ARI was found significantly higher in undernourished children of poor socio-economic class. Parental smoking habit and solid fuel use for cooking were recognised as important risk factors of ARI.

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In India, lymphatic filariasis persists as a major cause of clinical morbidity and as an impediment to socio-economic development. The direct costs incurred for the treatment of adeno-lymphangitis (ADL) episodes and the consequent indirect costs due to loss of income were determined from selected agricultural labour-intensive rural endemic pockets in Tamil Nadu. Information on the occurrence of ADL, its frequency and duration were collected using semi-structured questionnaire from randomly selected patients afflicted with chronic manifestations of bancroftian filariasis. Direct (treatment) cost per year per patient was found to range from Rs. 30 to 101 among patients with different manifestations. Income foregone (indirect cost) annually by each patient, which is a function of frequency and duration of ADL ranged from Rs. 182 to 702. ADL episodes among filarial patients alone cost a minimum of Rs. 4515 million for the nation every year. Cost benefit analysis of filariasis control programme in India showed that the benefits in terms of savings on treatment and work lost due ADL alone exceeded the cost by 24%. The per capita cost of the National Filaria Control Programme was calculated to be Rs. 2.6 per annuam.

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Morbidity patterns and drug usage in hospitalized children in a developing area were prospectively studied. The study group consisted of 347 children (age 0-12 yrs) representing all admissions to a paediatric unit over a six month period. Respiratory tract diseases (30.5%) and infectious diseases (26.1%) were the most common reasons for hospitalization. Tuberculosis was the most common infectious disease seen among the hospitalized children. Antimicrobials (60.8%), iron preparations (45.5%), vitamins (43.2%) and antipyretics (29.9%) were the most frequently prescribed groups of drugs. Ampicillin was the most commonly used antimicrobial. Adverse drug reactions were seen in 1.7% of the children. The overall mortality was 9.2%. The mean length of stay was 7.9 days and the mean number of drugs used was 3.4 per patient. More than 4 drugs were prescribed in 54.4% of children. Approximately two thirds received parenteral therapy.

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The present controlled clinical trial evaluates the immunoresponse to Purified Verocell Rabies Vaccnine (PVRV) by Essen schedule of vaccination during Pregnancy. Seventeen Pregnant women with history of animal bites who received PVRV as per Essen regimen were matched for the confounding variables of age, socio-economic status and doses of PVRV received with seventeen "Non-pregnant women". The mean age was about 24 years, majority (70.6%) belonging to middle socio-economic group and received 3 doses of PVRV. Contrary to the expectations the rabies neutralizing antibody titres were slightly higher in pregnant women (except day 180) but the difference was not significant (P > 0.2). Both the groups of women had antibody titres above protective level (0.5 IU/ml) from day 14 till day 365 thus indicating immunogenic efficacy of PVRV by Essen regimen during Pregnancy.

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One thousand one hundred and seventy cerebro spinal fluid (CSF) samples from clinically diagnosed meningitis patients were subjected to macroscopic and microscopic examination. CSF samples were also cultured. Five percent CSF samples were positive for bacterial (4.3%) and fungal (0.7%) organisms. Gram positivity was observed in 6.4% samples. The percentage of bacterial isolates was highest in newborn and infants (6.1%) and (4.3%) in patients of 1-12 years age group. Cryptococcus species were isolated from 8 adult patients. Among Gram positive bacterial isolates, coagulase negative Staphylococci was highest (8%), followed by Pneumococci (6%) and B-haemolytic Streptococci (2%). Among Gram negative bacilli, Pseudomonas aeruginosa was predominant (42%) followed by Klebsiella species (20%) though Klebsiella was predominant in newborns and infants.

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Between 1993-96, a serological study was carried out for differentially identifying HIV-1 and HIV-2 infections among the high risk group persons attending the various outdoor patient departments of BYL Nair Municipal Hospital, Mumbai. This study indicates that although HIV-1 is still the predominant virus among the high risk HIV infected persons in Mumbai, dual HIV-1-2 infections are increasing especially among promiscuous heterosexuals and female commercial sex workers. Increases in HIV-2 infections were observed later than dual HIV-1-2 infections, indicating that it is the HIV-1 infected individuals who through continued high risk behavior got infected by HIV-2.

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About 17 cases with clinical syndrome suggestive of epidemic dropsy attended to the B P Koirala Institute of Health Sciences, Dharan, for treatment. These cases were from three villages of Saptari district in eastern Nepal. Some of the mustard oil samples were tested positive with Nitric acid test. In the wake of this, an extensive field investigation was conducted covering a wider area in these villages.

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Training of 95 Anganwadi workers (AWW) were done in two groups in a rural block of Haryana State, India to impart knowledge on vitamin A deficiency (VAD) through lecture, demonstration, discussion. In group A consisting of 56 AWW townom coloured film slide was shown while in group B consisting of 39 AWW no film slide was shown. During pre-test 90.5% participants had medium score with an overall mean (+/- SD) score of 14.1 (+/- 3.0). Post-test conducted after 6 months showed a significant increase in knowledge of AWW regarding VAD with a mean score of 20.3 (+/- 4.51), (P < 0.01). Mean score of group A [22.5 (+/- 4.04)] was significantly higher than mean score of group B [17.4 (+/- 3.5); P < 0.05]. This study reveals the need for in-service training of AWW using appropriate teaching methods incorporating audio-visual aids like film slide show for control of VAD.

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Five hundred twenty adults were interviewed on the perceptions of effects of the environmental pollutants in Hyderabad city of Andhra Pradesh. The information was gathered on polluted water, polluted air, solid wastes, food contamination and readiness to participate in corrective actions. Both initial response and response after probing were recorded. Analysis was done basing on the level of literacy. The correct initial responses on effects of pollutants ranged from 28.3 to 35.4% while responses after probing ranged from 79.2 to 88.1%. 45.8% were ready to participate manually in the corrective actions while 24.6% were eager to contribute financially in remedial actions. The study reveals the need for the initiation of aggressive environmental education.

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This study was undertaken to explore the possibility of contamination of Vibrio cholerae serogroups 01 and 0139, the most important causative organisms for life threatening acute secretory diarrhoea and also potential public health importance, by isolating these organisms from body surface, gill and intestine of common table fishes like Labeo rhoita, Catla Catla, Cirrhinus mirgala and Tilapia mosambica which were reared in sewage and raw human excrita enriched fishery ponds. Vibrio Cholerae 01 or 0139 were not isolated from body surface swabs, gills and intestine of these common table fishes. Water samples of sewage enriched fishery ponds and sewage of Calcutta municipal corporation were also processed for isolation of these organisms, however, these samples were also negative for V. Cholerae 01, 0139 and non 01-0139 serogroups. Present study indicated that there was less chance of contamination of toxigenic and disease producing strains of V. cholerae by common table fishes which were reared in sewage and raw faecal matter enriched fishery ponds.

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